Choice Architecture: Nudging students to make better choices

~Aravindh & Sunil

Choice architecture is a method to extend multiple choices to individuals and giving them liberty in choosing an option coherently. In Choice architecture, consumer behaviour is taken into consideration while designing the alternatives and represented in a way that individuals select the option that is more aligned to  the provider. In schools, choice architecture is an excellent way to improve students’ physical and mental well being. Healthy habits can be nurtured in children using Choice architecture.

In one of the outreach schools in Auroville,  around 4 in 10 students were anaemic. Students eschewed nutritious snack and preferred tasty snack. In this case, children are often under a familiarity bias. A familiarity bias is when one decides to stay within their comfort zone. In this case, children portray absurdity heuristics; they tend to put away the nutritious food. They didn’t want to consume healthy food separately. To overcome this, the facilitators came up with a brilliant idea to blend drumstick leaves, dates, and peanuts (which are rich in iron) with porridge to keep the taste balanced with nutrition. After that, students preferred this snack and started to consume without any excuses. This nutritious mix meal resulted in a significant improvement in their health. 

The core driver behind this action is that the mere thought of eating food reminds us of how we feel when we eat it. Digestion starts with sight and smell. Instead of giving nutritious food separately, we can blend both nutritional and non-nutritional elements in the lunch meal. Children usually default to choices which are suitable to their taste and tend to take smaller portions that are easy for them to digest. By disguising nutritious food as per their preferred taste and size, we can nudge them to have a healthy meal.

Math Learning from Sundaram Sir


We have learnt the following topics and few techniques, puzzle(ken-ken) also learnt new information like Kaprekar constant, Collatz conjecture in excel. September 11(world trade centre hijacked)  etc…

S.No Topic Link
1 Place value (i) part 1:

(ii) part 2:

(ii) part 3:

2 Place Value real life examples


3 Addition stories


4 Word problem(Add-2 types, Sub-4 types)
5 Word problem(Add-2 types, Sub-4 types, and division -2types)
6  Equal sharing along with multiplication
7 Ratio
8 Difference between history and concepts





(i) part 1:

(ii) part 2:

(ii) part 3:

9 Geometry(triangles(scalene), parallelogram, rhombus)
10 Word problem
11 The surface area along with examples

12 Fraction Addition and subtraction

Comparison of fraction

Stories for fraction
13 Fraction rule

Fraction stories
14 Angles, angular distance, linear distance

Types of angles
15 Sets square – draw angles using sets square
16 Types of Angles chart/family tree



C3STREAM Land Designs delivers First IC chip

C3STREAM Land Designs delivers First IC chip:

~Ranjith, Saranya

Very-large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining thousands of transistors into a single chip.

One year back, we started learning the VLSI layout and design process with the support of “Aura Semiconductor Pvt Ltd” (Aura is a fabless semiconductor company innovating high-performance IC products for IoT Radios, Timing, and Portable Audio markets).

Over the year we have been involved with automation using SKILL (Lisp-based Cadence programming language) and layout workflow (python, shell scripting, etc), learning layout methodology, and aspects to keep in mind in layout. An example of SKILL code was the automation of a differential pair which is a very common circuit block in analog circuit design.  This process in the last year has got us now only comfortable with the layout, but also the entire cadence flow and supported the group at Aura automate small aspects of their work.


We were trained in the layout by our mentor by assigning us small blocks that were used in real designs starting from digital and then analog. After completion of a layout, we got feedback from our mentor on matching, MOS transistors effects like LOD, constraints in floor planning and routing, accounting, or parasitic such as IR drops and capacitance. The time we took for each block also reduced as we worked on more blocks and we could see our progress in not only laying a block but also reduced time in making sure that it satisfied DRC (Design Rule Checker) and LVS (Layout vs schematic). This process of working on real blocks helped us improve our skill, speed, and confidence and gave us exposure to different kinds of blocks.

A couple of months back we were included in a team on an active project with Aura. We were able to complete around 40% of the layout from Auroville. It has opened opportunities for this high-tech work to be done out of Auroville. Currently, and Siva and Vasanthraj Gandhi (who are now part of the team) are being trained by us along with Aura in a similar fashion. Looking forward to layout and in time design many more IC designs.

Example of a top-level chip:

Maximum Power Transfer Theorem

I am doing Prof.Nagendra Krishna Pura’s Basics electrical circuits course provided by NPTEL. In week 6, I learnt about maximum power transfer theorem.

states that – A resistive load, being connected to a DC network, receives maximum power when the load resistance is equal to the internal resistance known as (Thevenin’s equivalent resistance) of the source network as seen from the load terminals. The Maximum Power Transfer theorem is used to find the load resistance for which there would be the maximum amount of power transfer from the source to the load.

To verify this theorem, I have taken Vth as 10V and Rth as 5K ohms connected in series with the load resistance RL. Now I am varying the RL to get the maximum power

For doing this I have written a python program and plotted the graph power(mW) vs RL(Kohms)

# Maximum power transfer thorem using pyplot

from matplotlib import pyplot as plt

Rth = 5e3

Vth = 10

RL = [x*1e3 for x in range(21) if x >0]

Vth_across_RL = [res/(Rth+res) for res in RL ]

I = [Vth*1e3/(Rth+res) for res in RL]

def power(Vtholtage_list,current_list):

power_list = []

for i in range(len(Vtholtage_list)):

p = Vtholtage_list[i]*current_list[i]


return power_list

#print(power(Vth_across_RL, I))

power_list =[x*1e3  for x in power(Vth_across_RL, I)]

RL_kohms = [x/1e3 for x in RL]


plt.xlabel(“Resistance in Kohms”)

plt.ylabel(“Power in mW”)

From the graph I observed that when the load resistance (RL) is equal to the Thevenin resistance (Rth) of the circuits then I able to draw the maximum power from the source.

Nudging courtship with life

~Punithan & Poovendiran

“ A choice architect has the responsibility for organising the context in which people make decisions” – Richard H. Thaler, Nudge: Improving Decisions About Health, Wealth, and Happiness.

In general, Nudging is a choice architecture which is a positive reinforcement and indirect suggestions to make a choice or course of action. The idea of Nudging is all about applying the concepts of decision making and behavioural economics to yield a better and spontaneous decision, without limiting the choice. Putting it more straightforwardly, Nudging is helping people in making better choices for oneself without restricting their freedom of choice.

You can nudge for GOOD, or you can nudge for EVIL. Nudging not only contributes to the business world but also for the wellness of the society. Nudging helps to influence and direct people in the right way as we discuss two topics and examples here. 

Social Nudging is the concept of positioning our direction of a nudge for a social cause. When you nudge a person, and if his choice contributes something to society, then it falls under this category. Recently, a 90 years old man was in the limelight on social media. The chat waala opens his ‘Bhaba ka Dhaba’ stall early in the morning and closes it by 5:30 in the evening, finishing all his stock. But during this pandemic, he couldn’t make ends meet. A famous food blogger got concerned about the older man’s dire situation. The food blogger recorded a video of the older man (she fondly calls her Uncle Ji) and posted it on her social handle. Fortunately, many people stepped up to show their support for Uncle Ji. Many celebrities also posted on their social handles. We can see both the food blogger and the stars have nudged the society to contribute something for someone’s good. 

Nudging can be a handy tool in teaching — a hard lesson in the right way. A famous incident became viral on social media. As the incident goes, a teacher intentionally wrote a wrong equation on the blackboard. Students started to laugh at the teacher’s mistake. Then, the teacher explained the reason behind it, “You students did not appreciate me when I wrote the correct ones, but you all started to laugh when I made one mistake.” She added “The world is more similar to you; when you do many good things, no one will appreciate you. But when you do one bad thing, people will start to criticise you, and they will forget all the good things you did”. This is behavioural science is related to negativity bias where one tends to have a negativity dominance and tend to emphasise on that. Mistakes are a never-ending part of our life. We should  improve ourselves from those mistakes. The teacher nudged an important message into those students’ minds – to be mindful, determined and confident in their life. 


~Kalai & Sundar

In this project a big challenge for me was handling the objects between two backdrops. Initially I set the flag event for twenty-seven objects. It became an issue with debugging. After that I was aware that to use minimal amount of flag event. The second issue was, to hide the object using the broadcast event, it hid all the other objects and I was not able to proceed further. Then I learnt how to show and hide the object using the local variable between two backdrops. The next issue was while moving the object from one page to another it went behind the circle, from this I had learnt about the usage of (go to front and back layer) block in Looks. After fixing these issues I felt happy. Sanjeev helped me whenever I was struck.

From this project I have learnt about
how and when to use conditional blocks like if, repeat, forever, and wait.
how to apply local and global variable.
how to make a list and assign the list values to the variable.
how to set the mouse position.
how scratch compares the variable and gives the result.
how to use the flag event.
Show and hide the sprite between two background using the variable.
how to avoid repetitions of the code and make it simple

This game works based on the set theory.
It contains three different sets represented as Venn circles (shape, Inside color, outside color) and twenty-seven objects.
You select the object based on their inside color, border color and shape and place it on the Venn diagram.
The object moves to the mouse track.
Press space key for positioning the object on the circle.
If you place the object in the correct position it tells correct and stay in the circle, if it is wrong, it back to its position.
If you win this game, it will switch to home page.


~Sunil & Abilash

Integrating Science, Technology, Research, Engineering, Art, and Math to create holistic learning is called STREAM education. The Art Integrated (AI) education includes both visual arts (paintings, clay modelling, gaming) and performing arts (music, dance, drama).  It’s very important to incorporate kids in all of these five disciplines. If we seed these skills in our kids, it improves their practical thinking. Integrating art and science in education could increase their creative thinking and cognitive ability. It also encourages students to express science in unimaginable ways. AI-based education paves the path for experiential learning. Some of the activities to incorporate art with science are 


Pendulum painting is a fun activity to do with students using simple materials like water bottles, paper, paint, rope and chairs. This activity enhances creative and critical thinking among students. It will make them understand parameters like gravity, motion, momentum, and velocity. Students would be able to create a beautiful art along with conducting a pendulum experiment to know the physics behind the pendulum by practical approach.


Teaching Periodic Table songs to kids is one of the best ways to make chemistry enjoyable. Songs have always been the best ways to remember even the most convoluted set of words at ease. The periodic table song with a supporting video that has a picture of the applications of some aspects along with music, would enable students to remember the elements of the periodic table along with applications. These kinds of activity aid both the right and left brain to store accurate information and retain it.


Plastic Pollution has become a significant concern in today’s world. This activity of making simple electronic devices like a LED torch using plastic wastes would make students learn simple electronics along with hands-on training. Making art out of garbage would enhance creativity and positive thinking in students and also would create awareness about plastic pollution.

There are no limits in education and imagination; we can use our creativity to incorporate any form of art with any science concept to bring out the best in education. Other activities like dancing or acting in a theatrical play relating science or math concepts, could cultivate expression, self-confidence, presentation skill along with understanding STEM.

Experiential Learning (Joyful Learning of Mathematics)

Experiential Learning (Joyful Learning of Mathematics):

  • Experiential learning activities will be students-centered/ focused, the learning outcomes of experiential learning are flexible and open.
  • In experiential learning, the aim is to develop knowledge and skills.
  • Before asking children to solve a particular question ask them the right questions which make them think. The questions should be relevant and it should make sense to them.
  • Visualizing problems will help children in understanding faster way. For example.

“Good teaching is more a giving of the right questions than a giving of right answers”

How to make math class more interesting:

  • Make it meaningful(asking right questions)
  • Start with interesting real-life problems.
  • Use concrete relatable examples(relevant examples that help them to image the real-life incident).
  • Encourage creativity and ownership.



Sapiens: The Pivotal Role of Language in Human Evolution

~Shimalini & Radhika

In Sapiens, Yuval Noah Harari talks about how evolution took place, the hurdles and unprecedented changes humankind faced along the way. But, what provoked them to revolutionise things? What made them question their very own existence? How could the agricultural revolution be the biggest mistake made by human beings? What made them think that they have committed an error? The exchange of ideas incepted from the latter part of the cognitive revolution, through language as a medium. 

Every Species has its language, but they use them only to share information and alert their fellow species. Each tribal group invented their unique language from different parts of the world. Humans used language not only to increase their trust or dependency; they used it to cultivate thoughts and ideas. It was unbelievable and humorous when Harari mentioned that language arose from the act of gossiping in a group. Gossips enabled humans to analyse themselves and others based on their personality traits. Gossips gave birth to individualism. Languages allow humans to speak, share and describe things like which grain to cultivate? How to construct and design a wheel? How to hunt and capture an animal? Archaic humans carved on stones to transfer information to their offsprings and It gave birth to art. We strongly believe that this is the start of the data revolution. 

One aspect is quite eminent with the evolution of human beings. Without language, humans couldn’t have expressed their opinions and would have broken down the chain of verbal conveyance. We believe that language made humans a dominant species. 

Crawling Spider

~Sunil, Sharat & Praveen

Spiders are arachnids belongs to a class of arthropods. Unlike other insects they have 8 legs. There are more than 46,000 known species of spiders, found all over the world. Their size varies from 0.11 inch to 12 inches. Most of the spiders don’t see very well even though they have 8 eyes. Jumping spider is an exception, which can see more colours than humans. All spiders are predators which feed mainly on insects. They typically have a well-developed sense of touch. Few spiders are active hunters that chase and kill their prey. Other spiders weave webs or silk snare to capture their prey. Webs are instinctively constructed and effectively trap flying insects. Many spiders inject their venom(poison) into their prey to kill it quickly, whereas others first use silk wrappings or web to immobilize their victims. Spiders have venom but only a handful like the Black widow and the Brown recluse are dangerous to humans. Majority of spiders are harmless and help in controlling insect population that could otherwise devastate crops. Without spiders to eat pests harmful to agriculture, it’s thought that our food supply would be put at risk.