Class 9-10

Is it all your mother’s fault?
No matter what the “it” refers to, Sigmund Freud would have probably said yes to that question. However, we now know a lot more about psychology, parenting, and human relationships than Freud did.

What do you do with the old CDs at home, which aren't being used? How about involving your students to make some lovely toys out of it? We have curated some short videos on toys which can be made from old CDs.

CD Hovercraft

Discussion Points: Air Pressure, Newton's third Law

Blow and Float CD

During my interaction with the primary, elementary and secondary classes of my internship school, I found that children (majority of them) deemed themselves as unable to express their thoughts in writing. During the initial days, it came to them as a surprise when they were asked to write without having anything to ‘copy’ from. This is the reality of majority of our state-run and privately-run schools. Writing to them is nothing but ‘copying down’ whatever the teacher has to say.

Teachers play a pivotal role in transforming the nation. iB Hubs Super 30, a novel initiative to honour inspiring teachers across India, has announced the 30 super teachers.

‘Super 30’ movie along with iB Hubs, have come forward with an initiative called ‘iB Hubs Super 30’ to recognize and celebrate many such teachers across India. This initiative received an overwhelming response of 30,000+ nominations ranging from school teachers, professors, deans, IAS trainers, coaches to singers and dance masters across the country.

How does one introduce a topic like ratio, which is so widely present in daily life and so intimately connected with human experiences? Our cherished cultural achievements are permeated with it: music is full of ratios, as is art. Our daily existence involves cooking and shopping, and these are filled through and through with the usage of ratio. Shadows, which are present with us all through the day, offer a visual depiction of ratios in action.

We live in an era of data and information. Right from deciding what to read, what to wear, which restaurant to go to, which city to visit, whom to vote for, we consider ourselves rational human beings who rely on data to make all our decisions. How much of this data is based on facts rather than opinions and/or perceptions? This review looks at two websites, Gapminder and Our World in Data, which attempt to provide reliable global statistics and promote a fact-based worldview.

The following geometry problem is simple to state but challenging to solve!

In this edition of ‘Adventures’ we study a few miscellaneous problems.

Interesting problem on area and triangle.

A question about angle bisectors Consider a △ABC in which D, E and F are the midpoints of the sides BC, CA and AB respectively. Let G be the centroid of triangle ABC, i.e., the point of intersection of the medians AD, BE and CF. It is well-known that G is also the centroid of triangle DEF. If, instead of being the midpoints, the points D, E and F are the points of intersection of the internal bisectors of


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