Introduction
Chapter Name : Squares And Square Roots |
Sub Topic Code : 104_08_06_01_01 |
Topic Name : Introduction |
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Sub Topic Name : Introduction |
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Introduction
What is the result of a number multiplied by itself?
Pre-Requisites:
Basic knowledge about multiplication
Activity:
The length of a hypotenese of a right angled triangle is equal to the square root of the sum of squares of base and height.
Real Life Question:
How are the dimensions of area for a swimming pool of some volume derived?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Square number | A number that is the product of a number with itself. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Ice cream sticks | To form a right angled triangle and finding their lengths, form a right angled triangle and count the number of sticks used for the base, height and hypotenuse. Let a stick be of unit length. Check the values using Pythagorean theorem. |
Real life uses :
Construction, business transactions, computer games, animations
Practical examples around us
| Examples | Explainations |
|---|---|
| Overhead tanks Computer games | The area of the tank is measured by dividing the capacity of tank with its proposed height. We use square roots to determine sides or radius The squares and square roots are used in construction of computer games during interactions of characters with objects |
What you learn in Theory:
Square of a number is the product of itself. A number which has integers as its square roots is called a perfect square.
What you learn in Practice:
The number of ice cream sticks used to form the base and height be x and y. Then the number of sticks used to form the hypotenese is the square root of the sum of their squares.