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Have you ever wondered how your lungs move air around? Safety: This activity involves using scissors to cut into a plastic bottle. Ask an adult for help with this step and cover the resulting sharp edges with duct tape.

Get a rise out of your dough with a simple acid-base reaction!

This quiz has a leafy theme. Can you get the high score, or will it leave you heartbroken?

Here’s a fizzy treat for your mouth! But this sherbet recipe has a mathematical trick. You can use it to make as much or as little as you like. Keeping the ingredients in proportion in this way is known as scaling.

This quiz we’re looking at volumes. Time to fill up on some science knowledge!

A magnifying glass can bend light waves to make an object look bigger. Can you make a magnifying glass for sound waves too?

A fridge or freezer can preserve food for weeks, months or years. But that’s nothing compared to glaciers, with layers of ice preserving information about Earth’s climate for thousands of years.

Chemical formulas, such as H2O (water) and CO2 (carbon dioxide), are handy as they identify which atoms are present in a chemical compound. This can in turn help to make predictions about their properties. But only knowing which atoms make up a compound sometimes isn’t enough. It helps to know how the atoms are arranged.