## Arithmetic operations

*Why is minus into minus a plus?*

*Why is minus into plus a minus?*

For answers, read on…

## Number line

*What are Natural numbers, Whole numbers and Integers ?*

*Why do we need Negative numbers?*

*Why is -1 less than 0? How can there be something smaller than nothing?*

*Is there anything rational about Rational numbers?*

*What is behind the random sequence of unending decimal part in Irrational numbers?*

For answers, read on…

## Honing a child’s creativity

I must confess that I began to sense the gravity of creativity only after I had a child. Until then, I mostly associated creativity with art-work. Academics being the priority in our schooling years, creativity was a skill that I conveniently nudged into artists’ plate.

## Angles – The seed of Trigonometry

*Angle in degrees or radians? Which one to choose? *

Why do we express angles in terms of fractions or multiples of π i.e. 30°, 90°, 180°, 360°… as π/6, π/2, π, 2π … ?

*Why does a circle have 360°? Why is 360° = 2π?
*

*What is behind the periodicity of trigonometric functions?
*

For answers, read on…

## रिश्ता-ए-निहाँ

क्यों बदलती है तबीयत मौसम के बदलने से

जैसे भीगा हुआ एह्सास ओस के गिरने से

खिल उठता है दिल फूलों के खिलने से

उकसा जाती हूँ दरिया के समँदर से मिलने से

क्यों … ?

## Nature’s signature

Nature has been man’s first teacher. In observing nature, man began to discern patterns. Furthermore, these patterns seemed to exhibit constancy in their properties, making way for man to study them in detail and formulate theories. And thus evolved the various branches of science and mathematics, as tools to express and quantify Nature’s happenings. These discoveries further formed the basis of inventions useful in man’s day-to-day life.

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