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Have you ever wondered how cranes can lift such heavy things? Their pulleys really help lighten the load. In this activity, have a play with some pulleys. These simple machines can make heavy weights as light as a feather!

You’ll find yourself going a little loopy with this puzzle, but it’s worth unravelling the secret.

In this trick, you’ll wrap a shoelace around a pencil and a strip of cardboard. The string seems to pass straight through both, tearing the cardboard, but leaving the pencil untouched! You will need Pencil 2 rubber bands Thin cardboard Scissors Shoelace Some friends to impress

Happy Easter everyone! Here’s a handy way to draw an egg shape using maths.