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Written by Beth Askham Make your own climbing frog, using the power of friction. You will need A 20 cm x 20 cm piece of cardboard Two 5 cm long pieces of drinking straw String Sticky tape Scissors Coloured pens, pencils, crayons, paints or textas Other decorations What to do On your piece of cardboard…

What happens when you spin a coin on a table? It spins and rolls (or ‘spolls’), for starters. How it stops is much more fascinating.

Challenge your friend to bounce a ball across a table. With this one simple trick, you can get it to bounce back!