Class 11-12

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.

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.

Some problems for the Senior School.

In an article published in the November 2016 issue of At Right Angles we had seen how geometrical fractal constructions lead to algebraic thinking. The article had highlighted the iterative construction processes, which lead to the Sierpinski triangle and the Sierpinski Square carpet. Further the idea of self-similarity within these fractals was reinforced through the recursive and explicit relationships between various stages of the fractal constructions.

In this episode of “How To Prove It”, we consider two similar sounding terms which have great significance in higher mathematics: contradiction and contrapositive. Both of them arise in connection with proofs. We give several examples of proofs of both these kinds.

If two sides of a triangle have the same lengths as two sides of another triangle, and one angle of the first triangle has the same measure as one angle of the second triangle, what can be said about them? Under what circumstances will they be congruent to one another?

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