Linear Graphs
Chapter Name : Introduction To Graphs |
Sub Topic Code : 104_08_15_02_02 |
Topic Name : Linear Graphs |
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Sub Topic Name : Coordinates |
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Introduction
What is a coordinate?
Pre-Requisites:
Basic knowledge about proportions and graphs
Activity:
Every place on the map can be uniquely specified by a pair of numbers or a coordinate.
Real Life Question:
What is the location of Eifel tower on the map?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Graph Coordinate | A graph is an abstract representation of a set of objects where some pairs of the objects are connected by links The position of a point on the graph is indicated by a pair of numbers within brackets which are the co-ordinates for that point. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| World map | Name a place and ask the student to indicate the coordinates of the place using the latitude as the X-axis and longitude as the Y-axis |
Real life uses :
Maps, global positioning systems, navigation systems, travel compass, target systems
Practical examples around us
| Examples | Explainations |
|---|---|
| Maps GPS | The maps use latitudes and longitudes as the coordinates to give the location of a place. The GPS system also uses latitudes and longitudes as the coordinates to give the location of the place. They also use the height factor to give the height of place from mean sea level. |
What you learn in Theory:
Linear graphs use a pair of numbers one each from the X and Y axes to give the exact value of a point. This pair of numbers is called a coordinate. It consists of the distance from Y-axis and distance from X-axis in straight lines.
What you learn in Practice:
To define the location of a place on a world map, we need to mark the distance of the place from the Y-axis called the X-coordinate and the distance of the place from X-axis called the Y-coordinate. Here X-coordinate is the longitude and Y-coordinate is the latitude.