Representation Of Rational Numbers On The Number Line
Chapter Name : Rational Numbers |
Sub Topic Code : 104_08_01_03_01 |
Topic Name : Representation Of Rational Numbers On The Number Line |
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Sub Topic Name : Representation Of Rational Numbers On The Number Line |
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Introduction
The representation of natural numbers, whole numbers, integers and rational numbers on a number line can be done on either side of Zero. Towards right are positive numbers upto infinity. And towards left are negative numbers upto infinity. Between integers are rational numbers.
Pre-Requisites:
Basic knowledge about numbers
Activity:
Make a number line and locate the fractions we get by dividing various sets of integers on the line.
Real Life Question:
What is the platform number of the train to Hogwarts in the London station? It lies between which other platforms
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Number line | The line on which numbers are represented. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Wooden sticks as number lines | A line can be sketched on the wooden stick and marks can be made. Numbers written on papers can be placed in the marks. |
Real life uses :
Surveying of lands, positioning of winners, examination ranks
Practical examples around us
| Examples | Explainations |
|---|---|
| Speedometer | The speedometer is calibrated and the speed is a rational number. Exact speed can be calculated by using addition of rational numbers. |
| Split timing stop watch | These stop watches can measure to milliseconds and the time always comes out in the form of a rational number |
What you learn in Theory:
An Intro into representation of whole numbers, integers and rational numbers on a number line.
What you learn in Practice:
How things are represented on a scale based on various factors.