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📐 Mathematics - Class 8
Lesson 17 · Coordinates

Coordinates Presentation

MathematicsSubject
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Mathematics, Class 8

Coordinates

The address of a point · Pythagoras' theorem · Distance between two points

What We Will Be Able to Do

📍

Read and plot the coordinates of a point

📐

Find an unknown side using Pythagoras' theorem

📏

Build and use the distance formula

🔷

Name a shape from its side lengths

The Two Axes

↔️The X-axis
The line across, XOX'
Right is positive, left is negative
A point on it has y = 0
VS
↕️The Y-axis
The line upright, YOY'
Up is positive, down is negative
A point on it has x = 0

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Presenter notes: Today we read points on a graph and find the distance between two of them. Begin by asking pupils to say how many paces right and how many paces forward their desk is from the classroom door.