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Do you like paper planes? Here’s a different glider to try, made from cups. You might be surprised at the path it takes when it flies!

Imagine your calculator is broken. Although it will still display numbers, only the 4 key, + key, = key and clear key work. Starting at 0, can you get the calculator to display 1000? What’s the fastest way, with the fewest button presses?

Roads are dangerous places for our wildlife. So for many years, we’ve been helping animals out by adding ways to cross safely. There are tunnels and underpasses for wombats and other ground animals. For tree climbers, there are ropeways, strung high above the traffic. But how do gliders cross the road?

How fast can you answer this week’s questions? Put yourself to the test with another Double Helix quiz.

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!

Twenty years ago, my mum was twice my age. I’m 42 years old. How old is my mum?

There are plenty of reasons to hate mosquitoes. They are annoying, hard to catch, and their bites can itch for days. But they’re not just irritating – in many places they spread diseases such as malaria, Zika and dengue.

We’re counting on you this Double Helix quiz, or perhaps you’re the one counting! Can you calculate what’s needed to get 100% this week? If you’re after more fun science for kids, subscribe to Double Helix magazine!  

Lava lamps look super cool, but they can be expensive and hard to find. With this activity, you can make your own bubbly lava and learn a bit about oil and water!

Tomas is putting a number on a letterbox. He puts on one digit. Then he adds another digit. Tomas looks at it and notices that it makes a number exactly five times the first digit.