# All boards

## Area of Rectangle = Length × Breadth: Conversations with a 9 year old

Children are taught many kinds of measures in the primary grades, like length, weight, volume, money, time and finally area and perimeter (which is nothing but measurement of length). While for teaching length, weight and volume, efforts are made to give students an exposure to informal/ non-standard units of measurement (and thus some implicit understanding of what we may use to measure something), the other measurement ideas start with the standard units, conversions and formulae.

## ‘A Tribute to John Horton Conway’ – Glossary of terms

Nim: a two-person mathematical game; see https://en.wikipedia.org/wiki/Nim

[2] Dedekind cuts: a method of constructing the real numbers from the rational numbers; see https://en.wikipedia.org/wiki/Dedekind_cut

[3] von Neumann ordinals: a way of defining and extending the notion of natural number; see https://en.wikipedia.org/wiki/Ordinal_number#Von_Neumann_definition_of_o...

## The Mathematical Artist of Play: A TRIBUTE TO JOHN HORTON CONWAY

A Maverick Mathematician

In these strange and troubled times, when the world is reeling under an infectious disease and a quarter million have died from Covid-19 (as of May 1, 2020), it is perhaps inappropriate to mourn the death of a single individual who died of complications caused by the coronavirus. However, for the world of mathematics, this individual was very special indeed. John Conway stood out among the community of mathematicians, a legend in his lifetime.

## Children are Attracted to TLM as Butterflies to a Garden

Aditya Gupta

A child’s mind is like that of a butterfly in the garden which gets attracted to flowers of different hues and their enchanting fragrance. Children minutely observe happenings and activities in their surroundings and react to the smallest of change. They try to understand an activity or change on the basis of their perception and prior knowledge and develop their ideas. From here, begins the role of a teacher.

## Pollinators or plant munchers? The butterflies

Butterflies have always been a source of beauty and wonder. But, what gives these lovely insects their attractive colours? What is the best time to watch them? What do we know about their behaviour? In this article, the author explores the fascinating world of butterflies, sharing some ideas to bring them to life in the science classroom.

## Nature calls: a series of nature based outdoor-activities

Did you know that the outdoors, teeming with plants, animals, birds and insects can transform into an immersive and captivating classroom? Nature Calls is a series of nature-based activities designed to encourage students to explore their surroundings, and stimulate their wonder and curiosity about nature.

## Addressing the Nutritional Needs of School Children

Shreelata Rao Seshadri

Ritika Gupta

## Working Together

“Manveen can paint a room in 3 hours and Allen can paint it in 6 hours. How much time will it take them to paint the room if they work together?”

## Working Together

“Manveen can paint a room in 3 hours and Allen can paint it in 6 hours. How much time will it take them to paint the room if they work together?”

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