Introduction
Chapter Name : Exponent And Powers |
Sub Topic Code : 104_08_12_01_01 |
Topic Name : Introduction |
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Sub Topic Name : Introduction |
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Introduction
The other way of writing 25 = 2 x 2 x 2 x 2 x 2
Pre-Requisites:
Large numbers can be conveniently expressed using exponents
Activity:
Mostly, weight of sun, earth & planetary bodies are expressed in the form of exponents because their numbers are really large.
Real Life Question:
Weight of the Earth is a large number. How can it be expressed in a simpler form?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Exponent | Power to which the number is raised |
| Base | The number to which an exponent is given |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Number blocks | Arrange them in a line in different ways. Take notes & write them as exponent form. Check their values & verify if the answers match |
Real life uses :
A temperature law proposed by Newton which is used in most engineering applications follows exponential law
Places to visit :
Drawing Room, Planetorium
Practical examples around us
| Examples | Explainations |
|---|---|
| Area of an object | Metre2 = m2 = Metre x metre |
| Growth of Bacteria | The growth or decay of bacteria is expressed in terms of exponents because it is an exponential growth |
What you learn in Theory:
Meaning of exponents
What you learn in Practice:
Exponential form of expressions help in forming simple equations for complex numbers