Frozen Monster Hand Rescue

Push the plastic spiders down into the fingers and palm of the glove.

Mix the food colouring into a jug of water, then carefully fill the glove with it.

Squeeze out the air, close the top with the elastic band and lay it flat in the freezer overnight.

Next day, peel the glove off the ice under a little cold water, and ask an adult to help if it sticks.

Put the frozen monster hand on the tray and look at the spiders trapped inside.

Sprinkle a pinch of salt on one finger and watch for cracks and little holes appearing.

Drip warm water onto another finger with the pipette and see which melts faster.

Keep using salt and warm water to free the spiders one by one, counting them as you rescue them.

When every spider is free, tip the water away and dry the toys.