Mathematics
Beginner
50 mins
Teacher/Student led
+80 XP
Teacher-led from the board. Pupils do not need a device, but can follow on one.
What you need:
IWB/Projector/Large Screen

Decimals on a Number Line

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    Number line

    1 - Getting Started ~4 mins

    Here is a line with nothing on it but a 0 at one end and a 1 at the other. There are no other marks yet.

    Where would you put 0.5 on this line? Point in the air with your finger before anyone says a word.

    2 - Watch and Notice ~9 mins

    Here is a number line from 0 to 1, marked every 0.1. Each time a decimal goes on it, watch where its marker lands and think about why. Before the third one, decide whether 0.08 is more or less than halfway to 0.1.

    3 - Try It Together ~11 mins

    Key point

    Today we place these decimals on the line together, in this order: first 0.2, then 0.65, then 0.9, and finally 0.04. Each one sits in a slightly trickier spot than the last, so we'll predict where it lands before we drag the marker.

    Place the decimal on the line

    4 - Sketch the Line in Your Copy ~3 mins

    COPYBOOK MOMENT

    Illustration for Sketch the Line in Your CopyIn your maths copy, sketch a number line from 0 to 1 with a mark every 0.1. Then mark each of these decimals on your line and label each mark with its value:

    • 0.7
    • 0.34
    • 0.08
    • 0.5
    Pupil practice
    Module 1 · Place Value and the Decimal Number System Number
    Lesson 4 · Decimals on a Number Line
    Download Activity Book page (PDF)
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