Classroom Resources

English

Today is Charlie Chaplin's birthday. He made you smile by being silent through out his illustrious career. But then, in 1940 he made 'The Great Dictator' where he spoke only once. Not a homily. But that which trancends region, religion, language, caste, creed & colour. A voice of conscience which was pained at the happenings of that era. We are including Melody Sheep version of the speech which remixed the images from the contemporary happenings. Relevant as ever.

There is more to the story that right part of the brain is responsible for all things artistic & left part for logic. Neuroscience has come a long way from this fixation. With the advent of MRI (Magnetic Resonance Imaging) & later fMRI (functional MRI), we could unravel some of the deepest mystries of the functioning of the brain. In this video clip, Minute Earth makes it school classroom friendly with his illustrated humour.

This article is the first in a series dealing with inequalities. We shall show that in the world of algebra as well as the worlds of geometry and trigonometry, there are numerous inequalities of interest which can be proved in ways that are easy as well as instructive.

Revisit the way you can bisect an angle, with a fresh twist.

Take the perennial favourite Pythagoras theorem to the classroom and pose these investigative questions. Spiral of square roots perks up the proceedings!

Mathematical investigations are perfect for Low Floor High Ceiling activities. Here, we have described how a simple pattern can be recognized, investigated, played with and generalized. If your students have enjoyed DADS Rule, do let them try the same strategies with other number patterns; we hope they rule!

A Kepler triangle is a right-angled triangle whose sides are in Geometric Progression, which requires that its sides are in the ratio 1 : φ : φ where  φ = ( 1 + 5 )/ 2 is the Golden Ratio. Here is an unexpected demonstration of the Golden Ratio.

When we see a problem on maximization or minimization, we generally think of calculus or linear programming. But in reality, problems are never bound to a specific tool and we are always free to try something different, like high school geometry and even a bit of physics! Here we are looking at Fagnano's problem.

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