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Tangram Paradox

How can the same pieces of the tangram make this bowl before and after it was chipped? Use the interactivity to try and work out what is going on!

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Teddy Town

There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?

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Four Triangles Puzzle

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Rod Ratios

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Can you use the interactivity to help you? You can choose the correct length rods from the interactivity by matching their colours.
Perhaps you could line up white rods alongside the coloured rods to help work out their lengths and then their relative ratios.
You could also use the grid lines to find the lengths of the rods.