Intermediate
40 mins
Teacher/Student led
+65 XP
Teacher-led from the board. Pupils do not need a device, but can follow on one.
What you need:
Polydron

The Flat Faces Hiding on Solids

In this lesson you will explore how different solid shapes leave behind flat footprints when pressed into paint. Match cubes, cylinders and cuboids to their prints and discover why a sphere leaves none at all.

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    1 - Getting Started ~3 mins

    Illustration for Getting StartedWatch the board. We are drawing three paint footprints: a square, a circle and a rectangle. Say the three shapes you can see.

    2 - Watch and Notice ~10 mins

    A face is a flat side of a solid. When we press that flat side in paint, it leaves a footprint.

    Watch the board for each solid and the footprint it leaves. Spot the solid that has no flat face at all.

    3 - Try It Together ~8 mins

    Your turn. Match each solid to the print it would leave. Remember: a face is a flat side you can press in paint.

    Match the solid to its print

    4 - Draw the Cube's Footprint ~3 mins

    COPYBOOK MOMENT

    In your maths copy, draw the footprint a cube would print.

    5 - Class Challenge ~8 mins

    Match each solid to the footprint it leaves. We will check together after each set.

    Solids and their footprints

    Pupil practice
    Module 6 · Shape and Space: 2D, 3D, Position and Turns Shape & Space
    Lesson 67 · The Flat Faces Hiding on Solids
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