# numbers

## The sense of shape, size and numbers through art

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.

## Adding on a number scale, playfully

The game featuring Ali, the ant helps the learners comprehend that adding positive integers makes the number bigger. It also gives them the practice of using a scale & number line.

## A brief history of numerical systems

1, 2, 3, 4, 5, 6, 7, 8, 9... and 0. With just these ten symbols, we can write any rational number imaginable. But why these particular symbols? Why ten of them? And why do we arrange them the way we do? Alessandra King gives a brief history of numerical systems.

## Teacher and student videos by Bharat Learn

Bharat Learn (BL) is a NGO that works with the aim of empowering teachers and students to enhance the learning outcomes of the students. BL uses its Film Based Teaching Methodology (FBTM®) to convert existing school curriculum into video based teaching-learning content and makes it available to the teachers and students free and freely.

## The mathematical secrets of Pascal’s triangle

Pascal’s triangle, which at first may just look like a neatly arranged stack of numbers, is actually a mathematical treasure trove. But what about it has so intrigued mathematicians the world over? Wajdi Mohamed Ratemi shows how Pascal's triangle is full of patterns and secrets.

## Numbers, Pattern & Symmetry

Share this video with your students and give them tiles to play too - with symmetry, shapes, colours, and numbers.

## Problems for the Middle School - July 2014

Here are some problems for the Middle School. Also find the solutions to the problems given in AtRiA Mar 2014 issue.

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