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Drop the ruler, watch for the jump… that’s the point of drop jump! Can you work out which matchbox tray the coin will fall into?

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

Want to reach out and touch something with a puff of air? This tiny air cannon shoots vortexes of air that can be felt from metres away!

Think you understand magnets? In this hands-on activity, use a magnet to make a needle float and then fall.

Imagine a swirl of milk in a cup of tea, or a drop of food colouring in a glass of water. The way liquids move and flow is intricate and almost impossibly complex. But that doesn’t stop scientists from trying to understand this movement.

Double Helix magazine is looking for your questions! Our Microscope column answers the most intriguing science, tech, engineering and maths queries you can throw at us.

Here’s a classic activity with a showy twist. Surprise your friends by inverting a water bottle without spilling its contents!

Have you ever wanted to experiment with the orbits of moons and planets? Time to make a gravity simulator!

If you want to write a secret message, we’ve got a simple technique for you to try. Time to work on your watermark!

It’s exciting to get swept up in the fictional world of a good movie, but do you ever wonder if the story line is really possible? Sit back and pass the popcorn as we take a closer look at the science and technology behind Ant-Man and The Wasp.