The topic of ‘proof by induction’ is now a standard part of the syllabus of mathematics at the 11-12 level. Most students consider it a ‘scoring topic’ – they generally master the mechanics of proof by induction quickly, as the proofs follow a standard trajectory and are easy to mimic.

Oliver Sacks was a neurologist who brought the brain to popular imagination in latter part of the 20th century. In the article, the author presents Sacks’s work on brain phenomena, ranging from hallucinations and colour blindness, against the  backdrop of his life that was as interesting as the brains and people he studied. Also highlighted is Sacks’s remarkable ability to connect with and communicate about his ‘patients’ in a very humane way.

Kriti Gupta

Khilendra Kumar

Are you looking for a book that offers a fun, new perspective to science? In this review, join a mother and son as they share their experiences of one such book, called The Agenda of the Apprentice Scientist.

Jyotsna Lall and Hyder Mehdi Rizvi

Joyeeta Banerjee

Aims of ‘connecting’ as a strategy

Jagmohan Singh Kathait

Gomathy Ramamoorthy

In this short note, we present a proof of the generalised Pythagoras theorem. We use the ‘ordinary’ Pythagoras theorem for the proof.

Theorem. In any triangle ABC, we have:

AC2 + BC2 > AB2 <--> C < 90 ,

AC2 + BC2 < AB2  <--> C > 90◦ .


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