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Matching shapes

Finding the shape that is the same, whichever way round it is.

Paper packet. Every task here also exists on screen, where it is checked automatically; answers written on paper are not assessed by Nydus. When you are back at a device, enter your answers there.

1. What you will learn

Today we find shapes that match. A shape stays the same shape even when we turn it around.

2. Words to hear

3. Turn it and check

A triangle still has three straight sides when its point faces down. A square still has four equal sides and four square corners when it stands on a corner. Turning a tile does not stretch it or add sides. Look at the whole edge before deciding whether two tiles are the same kind.

Another way: picture

Trace the first two outlines. Then trace the last two.

4. Try a different size

Put a small circle beside a large circle. Both have one round edge and no corners. They match as circles even though one covers more space. Put a triangle beside them. It does not match, even if it has the same color. Shape, size and color are different things to notice.

5. Tile hunt

Look for a small paper triangle and a larger one. Turn one before matching. Tell or show the sides that helped you decide. You do not need to read a shape name to compare its edge.

6. Turn a triangle

1. Notice its three sides.

   Three sides and three corners.

   These describe its shape.

2. Turn the tile and check again.

   Still three sides.

   Nothing was added or removed.

7. Check a turned square

1. Look for its four equal sides.

   Four equal straight sides.

   A long thin rectangle would differ.

2. Your turn: work this step out. Its working is at the end of the packet.

   Check each corner.

8. Guided practice

Which shape matches a round plate's flat outline?

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Audio transcript: None

9. Guided practice

Match each shape to the same kind, even when turned.

Audio transcript: None

10. Practice

Match these outlines to their corner counts: triangle and circle.

Audio transcript: None

11. Practice

The first tile is an upright triangle. Mark the OTHER tile that stays a triangle after being turned.

This task has no paper form; do it on a device.

Audio transcript: None

12. Somewhere new

A toy builder needs every triangle tile for roofs. Mark both triangle tiles, including the turned one.

This task has no paper form; do it on a device.

Audio transcript: None

13. Lesson test

Lesson test: one question per skill, one attempt each, no hints. Your answers are checked when you submit.

14. Test question

Now collect every square tile for toy windows. Mark both squares.

This task has no paper form; do it on a device.

Audio transcript: None

15. What you can do now

You can find a shape that matches. Is a triangle still a triangle if you turn it upside down?

Working for the steps left to you

7. Check a turned square, step 2