Mathematics

Make a paper sundial that is accurate enough to measure both hours and minutes. Also check how local latitude affects your measurement very significantly.

1. A well known model for (a + b)2 which can be easily replicated with similar model made out of cardboard

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Typically when we think of counting on two hands, we count up to 10, but fingers can contain much more information than that! This video shows how to think about counting in binary.

Here is an elegant visual proof of the Pythagorean Theorem (check the links 1, 2, 3 ) developed by the 12th century Indian mathematician

David Horsburgh, the foremost practioner of Activity Based Learning in India, in his book Thinking & Doing illustrates how it is possible to shift the agency into the hands of the learners, teacher becoming almost a redundant facilitator in the background.

Here is an annotated excerpt of 10 pages from that celebrated book.

The assignment that you ask your learners to complete is not same as a practice worksheet.

A good assignment in any subject at any level should take into consideration the following points.

1. An assignment should have a well defined objective.

English

In this episode of "How To Prove It", we discuss some more applications of Ptolemy's theorem.

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.

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