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Dotty Circle

7 to 11

Watch this film carefully. Can you find a general rule for explaining when the dot will be this same distance from the horizontal axis?

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Harmonic Triangle

14 to 16

Can you see how to build a harmonic triangle? Can you work out the next two rows?

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Reaction Timer

11 to 14

This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.

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Guessing the Graph

14 to 16

Can you suggest a curve to fit some experimental data? Can you work out where the data might have come from?

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Bryony's Triangle

7 to 11

Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?

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Diagonally Square

7 to 11

Ayah conjectures that the diagonals of a square meet at right angles. Do you agree? How could you find out?

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Lots of Lollies

5 to 7

Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?

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Dotty Circle

Harmonic Triangle

Reaction Timer

Guessing the Graph

Bryony's Triangle

Diagonally Square

Lots of Lollies

Excel Investigation: Target Decimal

Key Obstacles Hindering Cross-curricular Teaching

Folding