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Difficulty: Tricky Gertrude has a collection of shapes that she likes to arrange in patterns. She starts with a regular hexagon with 10 cm sides, and three regular triangles that also have 10 cm sides. She arranges the triangles around the hexagon, and then lines them up. In the end, one side of each triangle…

Paleontologists learn a lot from looking at bones. Assembling a skeleton can show how a creature moved, where they lived, and even how fast they were.

Death is a fascinating and important topic for many scientists. It can also reveal much about life. If you get 5/5 this week, maybe you should consider a career in thanatology!

Here’s a fun way to keep your food fresh! Make your own food wraps, and reduce the amount of plastic wrap you use. Safety: This activity uses a hot iron to melt wax. Ask an adult for assistance.

When you think about a beehive, you might imagine it containing flat combs made of perfect hexagons. Except, that’s not the whole story. There are many different species of bees, and there are lots of ways that bees build their combs.

Difficulty: Fun I’m thinking of three numbers. They are consecutive counting numbers. When you add the first two numbers together, you get the third number. What numbers am I thinking of?

Our planet is covered in water. You’ll find it in oceans and rivers, as clouds in the sky, and even inside our bodies. Can you get 5/5 in this quiz, or will you start taking on water?

Your eyes can see colour and brightness, but there’s one more thing they can detect. With the right technique, many people can tell if light is polarised – no glasses needed!

Difficulty: Tricky Ari was 10 on her last birthday, and will be 12 on her next birthday. How can this be true? Lachlan was 8 on his last birthday, and will be 12 on his next birthday. How can this be true?

Right now, there are about 7.8 billion people on Earth, and that number keeps on growing. But could this growth be coming to an end? Experts have made a new prediction that Earth’s population will not reach 10 billion people. And the reasons why are surprisingly positive.