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Showing posts with label teaching. Show all posts
Showing posts with label teaching. Show all posts

March 12, 2017

Change in culture

Four years back when I moved to Auroville I would post one or two puzzles a week on the school notice board at Udavi. I had announced them in the classes I taught and there were always two children U and D in the school (in 10th grade) who would attempt to answer the puzzles. They would discuss the puzzles among themselves and often submit a solution to the puzzles. Sometimes they would have doubts and come and explain their logic to me and ask me to find a flaw.
I did some visual puzzles with arranging match sticks and these some of the 6th graders were interested in, but by and large, I got one or two solutions for the puzzles with barely any discussion about the puzzles.

Last week Naveen took up the exercise of putting up a puzzle a week in STEM Land. There has been quite some discussion about the puzzle - the 9th graders applying algebra to solve it and the younger attempting to do it without algebra. I even noticed a volunteer who has come to learn STEM has been attempting to solve it. 

It remains to be seen how much of this buzz translates to children taking the initiative to submit their queries, especially as we have not marked any prizes for their submissions. Nonetheless, I can see a change in culture, of attempting puzzles, that was missing in the children before.

March 07, 2017

Second STEM Land at Isai Ambalam

We started a second center of STEM Land at Isai Ambalam School on 1st March. The children at the school had been learning the games and puzzles and had set up stalls to engage those who had come. Some had created small projects like a name board with a welcome sign to a few 5 graders explaining a small LED circuit with a switch and a resistor, to games that the children had put up.
The 9th graders from Udavi had come for the inauguration and also brought their own games, rubiks cubes, etc to show the younger ones at Isai Ambalam the spirit of STEM land.

The opening is well documented in the following posts. 
http://www.auraauro.com/stem-land/stem-land-inauguration-at-isaiambalam/
http://www.auraauro.com/school/inauguration-stem-land-isai-ambalam-overview/

I wanted to talk about one moment of the opening ceremony when the entire Aura Auro team (7 people) were at the entrance. We could see all the people engage with the stalls and no one noticed any of us missing or all of us had gathered together. I just let it soak and we waited for a few minutes before starting the silent clap that slowly gathers steam till everyone was paying attention.

The best moments of a teacher are the moments when you are no longer needed.

March 06, 2017

Multiplication tables with children who never learnt it

There are children who are able to hold their fort without knowing the multiplication tables in the calculations in Mathematics. Some are quick at addition, some remember specific tables and extrapolate quickly. They survive till 9th grade where powerful mathematical concepts are introduced with milder calculations and are able to generally manage.

However, for most children for whom the number sense has not landed and are slow with calculations, the lack of knowing the tables is a serious hindrance in survival and any possibility of enjoying mathematics.

We took up the challenge of identifying 7th, 8th (and 9th) graders who did not know their tables. We worked with the children in identifying what they already knew - generally the 2, 5 tables. For a couple of children, the short-cut for the 9 tables was quick and they were comfortable with using that quickly. Some have the hand rules for 6x6 onwards, but it appears too slow for practical use. The table tricks were kludgy and not used e.g. some knew methods to write down the 7 tables, but it was too easy and not practiced enough to be usable in action and certainly not at random.

The common issues for children were 3x6 to 3x9, 4 tables, 6x6 to 6x9, 7x7 to 7x9, 8x8 and 8x9. I looked at a demo of the Vaughn Cube. Now, the demo is public domain and looking at the video it is easy to figure out how it works. They have given enough in the video (unknowingly?) to figure out not just how it works, but work out the details of the method. The rest of the post is about our Indian hack of the same and what we did with it.

The idea is simple, replace mathematical facts with objects that you need to remember in a 3-D room. The sounds t(1), n(2), m(3), r(4), l(5), ch(6), ka(7), f(8), p(9) are memorized in simple ways. An advantage of an object between two number is that it both 3x7 = 7x3 are the same. Iya one of the children who had a lot of difficulty with learning the tables announced that other than the 8 and 9 tables he knew everything. When I drew a pic of the 9 tables on his request he suddenly realized 9x3 = 3x9. Hey Anna, 9x3 is the same as 3x9. Then he noticed that all the other objects were also familiar, this makes the table so much easier he added. I had attempted to convey the same to him earlier and when I shared his Aha moment with his teacher she remarked that she had told him as much many times. I guess, it doesn't matter how many times someone tells me something, it only matters when I get it.


What we did with it. 
1: Game: Figure out as many of these combinations by watching the video. As it gets tedious, use the skip forward and back feature to make it a little interesting.
2: Exercise: Practice with what you know and find out what is missing.
3: Project: Make a mini project in Scratch that shows the objects as you type in the questions.
4: Practice, Practice, Practice
5: Project: Make a game that tests rigor by asking tables at random, build on it to time yourself. By now I have quite a few kids who want us to test them because they have gotten so good at it.

Some notes, 
- With some practice, the children who had given up on the tables in the past were able to remember tables.

- However, these are mathematical facts and it lacks a logical framework that children can work with when things go wrong. e.g. if the child remembers the wrong object it can be an absurd result.
- I'm still sticking with when all else fails (flash cards, logic of knowing 5 tables, knowing squares and adding and subtracting) perhaps give visualization a try.

January 16, 2017

Training of Savarayalu Nayagar Government Girls High School @ STEM Land

A note regarding the teachers workshop last week with Savarayalu Government Girls High School. Their principal Hemavathi had visited STEM Land with 10 of her children and (the computer instructor from KV Jipmer) a few weeks back and spent the day here interacting with the children and seeing their work.

I found the girls were very thoughtful and identified three areas that they wanted to add in their school - fun, challenges like puzzles, creativity in doing projects from their experience at STEM Land.

Hemavathi is the general secetary of the Pondicherry Science Forum and a very respected teacher trainer in the government. She was thrilled with the motivation and self-direction of the children who she saw were able to work independently and effectively. In her visitor note she wrote that STEM land gives her hope.

She put this in action and this week she organized all her 20 odd teachers from different subject areas including languages, Social, Sports and music and of course Math and Science to come during the holiday to STEM Land for training. We prepared a 4 hrs module on teacher training including use of stewardship tools that look choice of working from possibility and fears and doing things differently. Initially the teachers were not sure why we were introducing the stewardship tools that we said benefited us as teachers and are useful irrespective of the area you are working on, however, they were able to put this in practice the very next session when we jumped into getting teachers who had been fearful of computers for 30-40 yrs to program with Scratch. 
The teachers were very engaged and delayed their lunch by an hour and a half to work. They also interacted with a few children during the breaks. Three 8 grade children (Punidhivel, Kabilan and Vignesh) and Yuvaraj (9th grade) also joined the teachers and it was wonderful to see the teachers open to learn from the children. Thanks Anand and Geetha for responding to the children's request and letting them express themselves, it made a difference.

The reflections at the end of the day from the teachers gave us hope of changes in attitudes both towards technology and how they work with children. One of the teachers talked about how she and other teachers had assumed that being strict and making children sit straight and control their movement was making children learn, but now she saw what the body language of a children engaged in what they were learning looked like and would like to see that in her children. She also felt that she could have learnt a lot more if she had not grown up in a culture of fear of failure and that she will be bold in her actions for the benefit of children. Another teacher mentioned how she has always been externalizing actions (as school and we) and she will now take responsibility for her work as she sees its for her growth. An elderly teacher remarked that he had seen many schools both high class for well off children and poor schools. But, Udavi was special, its a high class school for children who are from poor families.

Given the positive response of the teachers we are continuing the engagement with them with a visit to their school tomorrow. Hope our work here makes the lives of the 450 girls and the 20 teachers in Savarayalu more meaningful and joyful.

(for STEM Land team - Arun, Bala, Muthu, Naveen, Pratap, Ranjini, Sundar, Sanjeev, Vaidegi)

July 03, 2016

From '15 does not have a square root' to 'what is the square root of 0.05'

After such a long break I though I will start with something simple. A couple of questions from children. A couple of weeks back one child said 15 does not have a square root (only 16 does and that is 4). I wondered what kind of creatures children thought surds are. I had done some square root work with 10 graders using graphs and it seemed to give them some idea that these are also numbers of some sort a month back, but it was a passing comment and I let it go.

Recently, a volunteer started coming into STEM Land and I asked him as I ask all adults to work on some projects to inspire children. I suggested creating some sort of graph in scratch for children to see the squares of non-whole numbers. He started it and got as far as creating squares for whole numbers (similar to what the 7th graders with Sundar did last year) and then gave up, preferring to use his time more productively by finding children who wanted to be taught.

Anyway, another week went by and I decided to take up this project and made a rudimentary squaring version with visual boxes (my hope is always to make something functional, but so terrible that anyone who sees it will want to modify it :-)). I went in yesterday and showed it to the volunteer. One child came by and asked what we were up to (never underestimate the curiosity of a child), I showed him, then another, then another kid. They played with it for some time. Then I modified the program to calculate a square root. This seemed to garner a little more interest. They started playing with the program and one of the 10th graders had an activity class and connected it to the graphs he had drawn and started explaining it to the younger kids. My work was done and I walked off leaving the computer to them.

Towards the later half of the session one girl came to me and asked me what the square root of 60 was. I walked her through my guess and she concurred, but murmered something about off screen. A little later she came back and asked me what the square root of 0.05 was. Hey where did that come from? She explained that she was tying to figure out how small a figure she can get and saw the really small square of just 4 of 1/100 and she triggered the software by asking it to calculate the closest square to 0.05. 
I went back and put 60 into the program and realized she was testing where the program ran out of space to fill the boxes. Boundary conditions, interesting...

[Thanks Swathi for suggesting graph notebooks and that areas up to 2 decimal places can naturally be represented in a graph notebook.]
Boring digression from the story:
If we look at a regular graph sheet it is divided into large 1 cm squares. Within these the squares are split vertically 1 mm lines and horizontally in 1 mm thin lines. There are also helpful guide lines at 5 mm that are a little thicker than the 1 mm lines. These lines divide a single square into 10 vertical pieces (0.1) and 10 horizontal pieces (0.1) and together into 100 smaller 1mm^2 squares. The big square is whole and a smaller square is 0.01.
Here is a picture:

Children are comfortable with decimal numbers on the scale. They can easily mark out 5.4 cm on the graph paper and soon realize that its 5 dark lines and 4 light lines. 
If we marked 5 cm in both x and y axis and completed the square we will get 25 full squares. No surprise, area is multiplication.
The same happens if we mark 5.4 cm in both x and y axis. What is the area of this? The following image may be a helpful... 25 big squares (=25), 4 rods x 5 (4x0.1x5 = 2) vertical and same horizontal (=2) and 4x4 (1/100) (=0.16). 

Now playing with modified program of a square root.


Here are the programs to play, break and make something better!
Squaring program     : https://scratch.mit.edu/projects/115474246/
Square root program: https://scratch.mit.edu/projects/115470991/

December 21, 2015

A Reflection on “Nothing can be Taught”

I reflected upon my interpretation at different times as a teacher.
of Sri Aurobindo’s: 'The first principle of true teaching is that nothing can be taught.'1

When I started teaching I wanted to be a good teacher. I planned my classes, used many resources and TLM (Teaching Learning Material), had many classes with activities, attempted to open the minds of children, and took a lot of notes. A workshop called the 'Stewardship for a New Emergence' helped me notice my growth as a teacher and capture the fleeting insights - it helped me be more patient and capable of listening to children. At this time, I interpreted the first principle of teaching as the learning I was going through to be a better teacher and a better person through my experience. I took the principle to refer to spiritual experiences that are our own. For example, in a typical classroom I would teach different points of view, or of looking at something to support diversity or handle misconceptions and children would work with TLM and at times the computer2.

As I continued working with children I noticed that my best classes were not the ones I prepared the most. Some classes had a flow and some, in spite of planning (and a few because of much planning) were hard. An almost identical incident or comment from children that derailed one class would have no impact in another. I noticed that this had less to do with the environment around me or what children experienced at home and more to do with the environment I was carrying with me to the classrooms and who I was being while I was in the class. I also noticed children were learning more when I was instructing less. Practically, my classes were getting more activity based with much peer learning and less lecturing. I often used computers with children creating projects to learn the material. I read up on constructivist theory and learned that each child (and adult) builds their own knowledge and I only needed to create an environment to let learning happen. I noticed that it was my 'I have a PhD and can show other ways of doing this' ego that was coming in the way of learning and was able to consciously make a choice to let opportunities to teach go, and let opportunities for learning flourish. My interpretation of Sri Aurobindo’s first principle at that time was that this also applies to practical learning through a constructivist approach3.

Some time has passed since then and I no longer see spiritual growth and practical learning as two distinct applications of the first principle of true teaching. It appears that every true learning is with the engagement of our entire being and is spiritual and helps us follow our core. Practically, now the environment I am working to create at STEM Land is such that a session with children is about self-discovery. It’s not about a procedure or the underlying concept, but about their experience. The environment offers choice and looks to the children to take responsibility for their learning. I do instruct, children do projects, but it happens when the need comes up from the children4.


---

1. Sri. Aurobindo, (1910) The Human Mind, Karmayogin.
2.  Ranganathan, S. (2014) Program to encourage critical thinking in children – 2013-2014. Grant report by Udavi School to SAIIER.
3.  Ranganathan S., Anand B., Kothandaraman S. and Gunasekar V. (Dec 2015) Using programming with rural children For Learning to think mathematically, epiSTEM 6 HBCSE, IITB.
4.  Ranganathan S., STEM (Science Technology Engineering Mathematics) Land and Resource Center (2015) Grant proposal to SAIIER.


November 30, 2015

Stroll through STEM Land

I made a 3 minute video of a stroll through STEM Land on a Sat. We (Aura Auro team) are together at the same time with multiple classes and a few children from around who join us. Here is the video:



A few notes:
- The display for STEM Land was made last week by a few children. It switches between a 5  sets of ways of how STEM Land is displayed. The children soldered the board together programmed an arduino to switch between these (with help from Naveen). Here is a blog post with more about this.
- We recently added dobble, blockus and another abalone to STEM Land. Blokus is another great strategy game and dobble is excellent for observation with different scaling. These additions are popular and extremely good in brain twisting skills. 
(We also got bounce off and jungle speed which are also very popular though I am not as convinced about their utility to learning :).)
- Children have been working quite a bit on Alice a 3D programming environment. This allows children to stretch the programming they were introduced to in scratch with a 2D stage to a 3D world. Here is a note on a game that Rati is creating.
- Blender has also picked up and few children children have learnt more or less on their own. Vaidegi also started putting the 3D printer in action first with things available online and then with learning blender herself this has added the idea of being able to create what you make in blender. The implicit mathematics and visualizing in modeling 3D images is excellent. With the printer you couple this with what can actually be made nicely.
- The 'fan' is a salvaged (thanks Lata) and the children added an external battery adapter (since the one inside had rusted) and Puni is explaining how he noticed that it acts more as an exhaust picking up things rather than what he expected of pushing things away.
- One group of students have become quite good at putting together mindstorm robots. The first one took them 2 weeks. This is their fifth robot and it just took them 2 days to put together. Here is a link with a snake robot in action.
- We have started salvaging old boards that I had around to get components we can use elsewhere and started a fix it lab. We fixed our first phone...yay, more on this later.
- A few Isai Ambalam children join us on Sat since its their day off and so do a few children from Auroville.

Playing, tinkering, making and learning is alive in STEM Land.

November 10, 2015

Experiences at STEM Land...

A few recent experiences at STEM Land that touched me...


- I have been touched how elder and younger children with similar interest are willing to work together as equals. How open elder children are to learn from younger children who have developed an expertise at something.
- We didn't spend a single rupee on labor to set up STEM Land. A big we (Aura Auro, our friends, volunteers and the children) did it ourselves.


- I had decided that I was going to let STEM Land self organize. One day some younger children came to me and told me that a couple of elder children had taken their laptops. I told them to work it out among themselves. About 10 mins later I had opportunity to work with the elder children and I enquired what happened. The elder children without batting an eyelid said that STEM Land is a place of work and they only took the laptops from two children who were playing computer games and not working seriously.


- We started working with the 9th grade girls only this term and in the beginning they would only stay in the games, materials room and not explore the technology room. This week I had a couple of girls working hard to create a story using programming in a 3-D environment and connect their mathematics to what they wanted to accomplish. Another group has been working on soldering a display for STEM Land with N.


- A few Isai Ambalam (the other school I work with) children come to STEM Land on Sat (their day off). They just felt at home and the Udavi children took care of them as their own when they are here for the whole day. A couple of Auroville children have started coming to STEM Land once a week and were unfamiliar with the programming environment and some Udavi children sat next to them and worked and helped them when they were stuck and I was only called once for help during two sessions of 1-1/2 hrs that they worked here.

- N who has completed his undergrad in EE wanted to volunteer at STEM Land I asked him not to worry about teaching children and just focus on using STEM Land facilities for his own growth. When he started working he realized that children could do many more things than him and learnt from them. 
When we were opening STEM Land we split the opening speech in 2 min sections between four of us at Aura Auro and the children were cheering for each of the youth. When we had completed the children cheered and asked N also to speak. He said, he comes here to learn and have fun.

- A couple of other youth who graduated from Udavi also come in on Sat in the afternoons and engage with children or play abalone among themselves. I get back to Aura Auro at 2:00 so I wasn't quite sure what to do when the Isai Ambalam kids were here the first week and needed to stay later. The youth said don't worry I'll stay here and lock up once they leave. Next week the Isai Ambalam kids were telling me that they will lock up themselves!

October 18, 2015

Opening of STEM Land and Hindu article

We had a wonderful opening at STEM Land with children from Udavi and Isai Ambalam hosting games and puzzles stalls and demonstrations of their work at STEM Land.  Here are photographs from the opening.

One interesting thing that happened was a couple of students Pree and Yuv decided to work together on creating "STEM Land" with a bunch of 7 segment displays and actually completed it over the duration of the event. They were also able to make the display blink as Subash who was observing their product asked for. They built this with an Arduino. Naveen who is volunteering at STEM Land is now working on soldering this together so STEM Land has a display at the entrance.

The Hindu covered the event. Here is a photo of the article. I can't find the uploaded version of the article so the pic would have to do.

There has been a lot of energy since the opening and children wanted to learn python and do 3-D modeling. We started, but the progress was slow and I researched for something more advanced than scratch that could do more and found Alice 3. A 3D world that is similar to scratch with drag and drop, but with significantly higher possibilities and complexity. Children are loving it a couple of them have been keen on blender as well. 

October 04, 2015

STEM Land inauguration on Friday 9 Oct 2015

STEM (Science, Technology, Engineering, Mathematics) Land is an space exploring Science and Mathematics holistically with active use of Technology and Engineering (deriving principles from experience), its also a resource center with Math and Science materials, a maker space and a puzzles and games library. 
Its impossible to describe what STEM Land is, you need to experience it. Come join the adventure and start exploring STEM Land at the opening and a small fair at STEM Land @Udavi school at 10:45 a.m. on 9th Oct [Main Building], Auroville.
Please RSVP so we can have enough snacks (healthy and unhealthy) for everyone.

If you want to read more about STEM Land, please take a look at http://www.auraauro.com/stemland/

Why STEM Land?
Though STEM is an acronym it can also refer to an approach to science and math education that is oriented towards application and making, tinkering and engineering. Its Land and not Lab because we are targeting a culture of learning rather than teaching and just as in France children learn French just fine and in Tamil Nadu children learn Tamil just fine, we hope that children will learn STEM naturally in STEM Land. 

Team:
The center is being initiated by the team (Bala, Sundar, Sanjeev, Vaidegi) of Aura Auro Design. But, we are well aware that the use of the center will involve a lot more and be driven by the interest of the children to learn.

Thanks to:
- Big Sanjeev and Udavi school for providing us space and up-ing it based on enthusiasm of the children.
- SAIIER who have provided us with the funding at just the right time to set up the center.
- Many other friends Ram, Gaurav, Shree, freecharge (company) for supporting materials that are being used at STEM Land.
- Many of our friends who helped us set up the center voluntarily, we spent no money on labor and did all the work ourselves and with friends. 
- Naturally, thanks to Aura for supporting Aura Auro Design without which this would have never become a reality.

October 02, 2015

Completed paper on children learning using computers

Many things have kept me away from blogging. This post is about the first, refining a paper that has been accepted at epiSTEM6. epiSTEM is a biennial Conference Series, to Review Research in Science, Technology and Mathematics Education conducted by Homi Baba Center of Science Education and IIT Bombay.

As Heidi Watts who helped me rethink the paper put it the paper now is about how children learn rather than about mathematics or computers. It has case studies on how children have learnt by trying to explain something to the computer through programming. 
Thanks also to Vaibhav who proof read the first version that got accepted, but both he and I knew it wasn't up to the mark then :).

Below is the abstract. Here is the link to the paper.
Using programming with rural children For Learning to think mathematically
Sanjeev Ranganathan, Bala Anand, Sundranandhan Kothandaraman, Vaidegi Gunasekar
Aura Auro Design, SAIIER (Auroville, India), sanjeev@auraauro.com
Is it possible to use computer labs in a rural setting that encourages reasoning, visualization, abstraction in children (as envisioned in NCF 2005) while at the same time addressing curricular needs?
This paper addresses the question through the use of programming in two rural schools including integration of curricular areas for fractions, cube roots, algebra, compound interest, data handling, geometry, etc.

We explore three styles of instruction - projects for children to demonstrate their understanding, challenges to visualize abstract concepts, and games created by children themselves for mastery.

August 16, 2015

On work and play...

At an educational meeting we went about making a distinction between 'work and play'. The closest I could come up with was that work was an activity being done that is useful for others and play was an activity not meant to be useful. Of course, I knew it was flawed, self-work is useful for others intangibly and for professional cricketers play is actually work. Of course this doesn't start to capture where work and play seem all mixed up! I could not define it in terms of enjoyment as there have been many times when I enjoyed myself being at work and at play.

An incident with the children helped me understand this distinction differently.

While creating an animation of the Earth going around the Sun in an ellipse (with the Moon rotating around the Earth) the children had use the computer to create the solution for ellipse equation they got from geogebra. It was all done and they had created the following animation. 
(If you are having trouble viewing animations please update your flash player).

Here is a short clip of the part where children noticed that the earth was rushing past at the top extreme in the program that they had created.




I had felt that being able to solve a complex algebraic equation was enough of a challenge and the children had already spent a week on this project and would want to move on, but the glitch really bothered the children, they were unsatisfied with what they had created. This created an opportunity for conversation about slopes and how things were changing differently when solving in one part of the curve, but faster in the other part of the curve. That we needed to compensate with more points where things were changing faster. It took another three days till the children were happy with their work and it looked like the one below:



On reflecting on the incident I learnt that its play when you do something that you don't have to. Of course this definition seems obvious when you are at 'play'. But, it applies equally to 'work'. The moments where I felt I had done something special were the moments when I did what I had to, but pondered over it and did something more. There were already solutions and I didn't have to do more, but I made work play and kept going. 

It helped me connect to the idea of the next right answer, the pursuit of excellence in getting an answer and continuing to look makes work play.

What a world we would create if all our children could make their work into play.

August 02, 2015

Copy-Paste (the hard way)...

The children had been thrilled with being able to animate the moon going round the earth and wanted to show the solar system with the earth going round the sun. 

Thanks to Arham I had recently seen a video called Earth's motion around the Sun that indicated some of the complexity from the simplistic info that children had:
https://www.youtube.com/watch?v=82p-DYgGFjI

We looked at it and the children felt that it would be interesting to get an object to move in an elliptical path and replicate the earth going round the sun.



The circle was more or less straight forward with moving and turning in each step, but an ellipse...I talked to them of using Geogebra to draw the curve they wanted e.g. an ellipse and then "copy-pasting" it in scratch. Of course the issue was not drawing a shape, but to get an object to travel along the curve so it needed to be true to the curve.

I started with a simple case if x+3 = 5, we went over the story and I reminded them that the answer was not important, it was a trivial case and we were trying to get a method that would help the computer do a repeated simple task till it reached a condition. Also to have a simple condition we changed this to the expression x+3-5 and substituted values of x from -3 to 3 to find when the value of the expression goes to zero giving us the correct x.

We then attempted to solve 2x+3=6 i.e. 2x+3-6 and check when it becomes 0. But, it did the following:
For x=-3-->-9 ; x=-2-->-7 ; x=-1-->-5 ; x=0-->-3; x=1-->-1;  
      x =2-->1  ; x=3-->3    ; x=4-->5    ;x=5-->7 ; basically missing 0. What would then be the way of capturing where the answer lies. The idea that came to the children was that the result of the expression changes direction. Naturally, the last result will need to be remembered, but how do we check if something has changed direction. 
I asked them what they had learnt from integers that might help them do so crisply.They could not quite figure out how to go about it and when they couldn't quite connect after struggle I guided them into the product of integers and checking if the result it positive or negative. Of course here we get the closest integer number, but if the equation is large even though we don't have the decimal parts the curve looks good enough.

We then moved to a real equation x+y=3 and for each value of y we swept x...Once it worked for a line we just moved to the curve and only needed to handle the boundary conditions. 
    

August 01, 2015

Where is the moon now?

One interesting conversation I had recently was asking the children where they expect the moon to be. When we talk about how disruptive technology can be an app line startracker that shows the position of the moon 'right now' gets into a lot of how children think.

From the first answer in the sky to where in the sky then conversations on what happens during the day and night. I asked the same question over time to different children and with the changing position of the moon it enlightned different aspects of learning. Here are some of them:

1) In an initial thought most children thought the moon rises and falls consistently at more of less the same time. So it should be the other side of the earth. But on looking for the moon it was noticed in a very unexpected place. 

We then decided to for the moon and record where we see it and the time we saw it. That was a week before the new moon and a lot of children came back with there was no moon this week, but some others noticed that they saw it in the morning. We talked about sometimes seeing moon even after sunrise and sometimes even before sunset. What this all this mean?
2) Drawing the expected position of the moon and trying to represent meaningful information of a 3 Dsetting in 2D that led to frame of reference direction and directions. This led to discussions of which plane we can draw aka where does the moon rise and set. It was interesting that there was a child in each class who through that once the sun sets in the west the moon rises from the west.

3) While most children disagreed to the above they could not give any convincing argument to their peer other than that's the way it is.
There was some discussion of how the moon rises and sets. We have been talking about differentiating science from information i.e. being able to understand a phenomenon so we can use our understanding to explain another phenomenon.
One of them was understanding the revolution of the earth which explained both the sun and the moon rising from the east.

4) The children got some clue of which of their classmates were conveying useful information regarding their sightings and which were just making stuff up :).

5) Discussions on fractions! Based on where the moon we talked about where the moon would have been (w.r.to earth) 12 hrs before 6 hrs before and then the more open ended question of when would the moonrise have been. I say open-ended because it brought up the question of at what degree do we consider it moonrise and what the present angle is...

6) It brought up interest on how to create an animated model of the moon around earth, in fact about the moon and earth around Sun.

7) And then the question, how does the camera see that far in the sky :). 
I moved the discussion to possible ways of doing it including a three axis accelerometer that helps is determine where we are looking + gps + the star map + calculation of the moon and planet movements and how that was a cool way to use math. The children immediately got the wiff that I have switched from anna mode to 'teacher' mode and they started to loose interest. One of them even remarked that then we can't see the man-made satellites. 

I learnt my lesson and decided to keep my agenda of teaching something aside to avoid messing up with their learning. When asked this question the second time by another set of kids  just stuck with, 'no clue, but isn't it cool!'


June 23, 2015

Questions of children

I started a science class once a week with young children in Udavi.

I asked him what science was and the quick answer was experiments, then a study of living beings. I explored if they could tell a living being from a non-living being by creating a rule that we could apply. The children came up with various aspects they could think of it moves (you mean like a fan or car?),  it talks (like a tree?), soon the children got the hang of what was going on a conversation got going where a child would propose a rule and anyone who disagreed would come up with an example of why they disagree that the rule is always valid.

They made a table
Rule for Living and non-living:
Rule              Example(s) of Agreement     Example(s) of disagreement
Breathing      Humans, dogs                         Do plants breath?

It was interesting that even through children said living things - they first associated it with humans, then with animals, then plants and then non-living things....
It also took them some time to think in terms of examples of agreement of disagreement. Some of the children initially wrote living things in the first column and non-living things in the second column which were  in agreement with the hypothesis. It appears more tempting to classify than to see if it is relevant to a rule...

We then moved to questions they had, do plants breath. What is breathing? If its taking oxygen and giving out carbon-di-oxide (like a fire?) then its one answer and if its taking in air its another. This led us to doubts and questions children had and how as humans we are prone to have doubts and are willing to put an effort in resolving these doubts, perhaps, that is what science is. I wanted to hear from each child so we started talking about doubts that children had about the world, here are some of them:
- How can you tell if a fish is male or female?
- Where does an electric eel get its electricity from?
- Why do birds fly and not humans?
- How exactly do gills help fish get oxygen?
- Why do plants use carbon-di-oxide and give oxygen and why do humans do the opposite?
... and then it exploded, everyone had something to ask and add.

I suggested that we make one large list of all of them and go through them. Looks like a nice curriculum for that class to me.

I also noticed there were many fish questions, I wondered if it was natural or because the new building has a pond within it.

June 09, 2015

It takes you 40 yrs to get...

well, of course to 40 yrs of age!

It has also taken me time to figure out that I want to create a learning space of constant growth that makes Science, Math and Engineering natural and fun.

I have already been working on the basis of such a space for the last couple of yrs and now with the team at Aura Auro am ready to create STEM Land.

STEM (Science Technology Engineering and Mathematics)  Land will
- Work with over 100 children from multiple schools for 4-5 days a week on Math and Science using hands on work.
- Work to transform the culture of right answer and 'sums' to discussions on approaches and patient problem solving
- Remap curriculum starting from 6-9 grades to activities and projects using technology, puzzles, games, etc
- Serve as a teachers resource center for Math and Science teaching aids and activities

In short provide an alternative model to the current education system.

I need your help in raising funds for STEM Land. My present target is 23 lakhs over the coming year. Here is a detailed concept note on what STEM Land is about and here is the budget for the same.

Please send me an email if you can support the initiative. Donations in India are 100% tax deductible.

Truth and love,
Sanjeev
---

June 07, 2015

What was accomplished this schooling year

Primary work has focused on classroom interventions in mathematics and problem solving in middle school 5th-8th grade. Many abstract concepts are grounded in middle school and if these are missed they leave gaps unfilled resulting in children having an aversion of mathematics and weak problem solving ability.

One of the aspects of work has been in making learning math fun and accessible for children while changing the perception of what mathematics is both for children and teachers. I had used puzzles, games, educational material, construction of models, electronics to make abstract learning tangible and provide application for children. This is documented in detail in the CriticalThinking_Report.pdf.

This academic year I focused on extensive use of technology starting with programming with Scratch with 6th-8th graders and mapping aspects of Math curricula through projects and challenges in programming. Three broad approaches were adopted for Math curricula through programming:
  1. A set challenges for children that involved demonstrating their understanding of abstract concepts visually through programming including fractions, long division, pie charts e.g. demonstrating what it means to add numerator and numerator and denominator with denominator in a fraction and what is a meaningful way to add it.
  2. A set of challenges were based using programming to understand mathematical ideas visually including linear expressions, percentages, simple and compound interest. As an example 5x+10 was graphed as rectangles of varying heights. Then shapes observed by varying the slopes or varying the added constants were observed and interpretations and explanations explored (stair cases of different kinds including making either the slope or constant a random variable, etc). This was then modified to investigate solutions to equations e.g. 5x+10=75 that used the expression and the pictures and paused when the result was reached.
  3. Children created games that helped them understand a concept and then work on rigor to master an aspect including positive and negative integers, cube roots that resulted in two digit numbers. Once children get into the mode of creating their own programs often when the computer is available they do not drift and get carried away and play games, they tend to create them. If this is done step by step with values that they put in place first that they knew the answer of and then randomizing it they still want to be able to better their own programs.
Programming was also used in English to give life into the stories that the children had created by animating them in scratch. We worked on this project with two grades 7th and 8th. The 7th graders had also used programming for math and their results in terms of how elaborate and complex they could make their stories even though they were younger and were attempting the stories the first time as well was interesting.

Beyond Mathematics and English, programming was taken further into sensing the real world using Makey, Makey. This helped children respond to a real life event like touching a plant, water or items with some moisture content (not complete insulators). Using this the children made their own version of a water tank filling alarm and a non-touch (pressure based) burglar alarm. These exercises helped children connect the programming to sensing the real world and think of applications where they can make use of these aspects in real life.

To complete the loop of controlling in the real world we also worked with the Finch robot and controlling the actions of the robot to go around obstacle courses and deliver small paper balls into goal buckets. The most popular game we created was the parking game with a random set of commands that made the robot move around and having to predict where the robot needs to be placed to reach a certain goal. We used this version at a school fair with success.

It should be mentioned that this approach is significantly different from ready-made material available for children like online lectures (those available in local language), or animation videos that are more or less passive. The so-called educational games that attempt to 'replicate' rigor use the same methodology of trying to get a high score used in the traditional system with the same pitfalls e.g. if given a choice children play games that they are already good at to get a higher score rather than stretch themselves with new games.
However, a paradigm shift is made when instead of trying to program the child through the computer, we let the children be in control and program the machine. In the first paradigm the computer is always right, the child is always a user and playing catch-up. In the second the children realize that the computer actually needs to be given step-by-step and can't make the simplest connections on its own.
It changes the dynamics of children using machines and their thought process in how they think of an action and break them down. It also helps children truly appreciate the amount of work that goes into making a computer look smart!

More interestingly the children learn a lot of implicit knowledge and conventions by using them e.g. the Cartesian system when trying to move their objects in the directions needed. Children who feel like failures with test scores in time bound examinations, persevere and feel proud when they are able to demonstrate their learning.

We also used physical technology primarily the DIY bigshot cameras that can be assembled by students and over 60 children from various grades assembled the cameras, took pictures and put them on the computer and then used instructions backwards to disassemble them for the next group to use them. The exercise of group work, reading and comprehending instructions and analyzing the pictures was interesting. The hand crank also gave a context to look into gears, ratios. A lot more could be done in optics, imaging. But, the children were very curious about the 3-D images taken by the camera and experimented quite a bit with depth.

The computer lab at Udavi, Makey, Makey, Bigshot cameras and the finch robot were donated by friends and visitors who saw the impact of technology on children and the interesting mathematics that the children were able to do. Further class notes and work of children is available at (www.smallisbeautiful.blogspot.com).

Just as the response of children to technology is obvious so is the lack of teachers who can play with this interesting resource and engage with children. This was especially true for teachers engaged with village children. As part of filling this gap I founded Aura Auro Design (www.auraauro.com) in collaboration with Aura Semiconductor Pvt. Ltd. this year. Aura Auro Design works with 3 electronics graduates and trains them in state of the art analog design (5 hrs a day) while engaging them for (3 hrs a day) to work with schools with a focus on learning through technology.
This has created a small team of local skilled and technically savvy youth who are learning and teaching at the same time. Aura Auro makes explicit that every teacher needs to be a learner.


It has also created a team that is working on STEM research in rural India to deliver results beyond what one person is capable of.

May 02, 2015

A year in pictures at Udavi School


Here are a few albums related for the 2014-15 schooling year at Udavi (primarily for the 6th grade), special thanks to Sudhir for the pictures. Click on the pictures to take you to the appropriate albums.

Electronics, makey, makey, battery and magnet based motors.

Makey Makey and water level detection.

Bigshot cameras (assembly, pics taken by the cameras, measuring the voltage of the pathway from the motors to the battery, etc).
6th Grade assembly

7th Grade assembly and pics taken

8th Grade assembly


8th Grade visit to crocodile park trip documented with the bigshot cameras they made

Puzzles and games and interaction with Aura Auro youth
.
Working with their hands on blocks and building models

Using wooden blocks to understand squares and square roots

End of the year demonstrations set up by children included demonstration of polarity of motors, games based on continuity, resistance (pencil lead extracted by burning out the wood at just the right temperature), makey, makey burgulary alarm. It also had the children perform about the plants in the solar system and build a rocket that moved.