Mathematics

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50 mins

Teacher/Student led

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+80 XP

What you need:
IWB/Projector/Large Screen

First Quadrant of the Co-ordinate Plane

Learn to plot points on the first quadrant of a co-ordinate grid using the right-then-up rule. Discover why the order of the two numbers in a co-ordinate pair matters by comparing points like (3, 4) and (4, 3).

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1 Getting Started
2 Watch and Notice
3 Sketch the Grid in Your Copy
4 Try It Together
5 Class Challenge
6 What Did We Notice?
7 What's Next
Pupil practice

1 - Getting Started ~4 mins

Illustration for Getting Started Here is a plan of our school with a grid drawn over it. One room is shaded to stand out.

How would you tell someone exactly which square the shaded room is in, if all they had was this plan and could not point at it?

👇 Mark your steps as done as you complete them.

+5 XP

2 - Watch and Notice ~9 mins

Every point on the grid has a name made of two numbers in brackets, like (x, y): the first tells you how far across, the second how far up, always starting from the corner at (0, 0). We will look at three points on the interactive. Look hard at the two points that use the same numbers in a different order, and later at the two points sitting on the axes.

👇 Mark your steps as done as you complete them.

+10 XP

3 - Sketch the Grid in Your Copy ~6 mins

COPYBOOK MOMENT

Illustration for Sketch the Grid in Your Copy In your maths copy, sketch a first-quadrant grid with the numbers 0 to 6 along the line across the bottom and 0 to 6 up the side.

Then plot each of these points and label each one with its co-ordinate pair beside the dot:

(3, 4)
(1, 6)
(6, 1)
(5, 0)
(0, 5)

+10 XP

4 - Try It Together ~8 mins

Today we work through these points together on the board, one at a time: (2, 5), then (5, 2), then (4, 0), then (0, 3), and finally (6, 6) up in the far corner.

Key point

Before each point is plotted, say out loud where it should land. Watch (2, 5) and (5, 2) closely — the same two numbers, but they will not go to the same place.

Plot these points together

+15 XP

5 - Class Challenge ~7 mins

Key point

Today we take on a set of plotting challenges on the board, getting a little trickier each time. First plot (4, 3). Then plot (3, 4). Next find the point sitting on the x-axis at (6, 0). Then find the point on the y-axis at (0, 7). The last challenge asks for the point that swaps the two numbers of (2, 7).

Before each point is plotted, everyone predicts aloud where it will land. Then the pupil at the board presses Check so the whole class can confirm together.

Plot the target points

+15 XP

Pupil practice

Module 7 · Data, Chance and the Co-ordinate Plane Data & Chance

Lesson 103 · First Quadrant of the Co-ordinate Plane

Download Activity Book page (PDF)

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