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Every second counts when a big earthquake hits. As soon as an earthquake sensor picks up the tremor, warnings can be sent over the internet, much faster than the shake travels through the Earth. And now, scientists have found a way to detect big earthquakes fast, maybe even before the ground starts to shake!

The soma cube is a tricky puzzle! First, you’ll glue some cubes together into strange shapes. Then see if you can get those shapes to come together!

These clear, shiny gemstones are very valuable and oh-so-special. Can you sparkle like a diamond and get full marks on our quiz?

Difficulty: Extreme! Srinivasa lives in a house on a short street, with houses on one side. The houses are numbered 1, 2, 3 and so on. He was practicing his addition when he noticed something strange.

This cardboard doll loves to leap! It takes a bit of crafting, but the results will make you jump for joy.

What on Earth can jump the highest? Olympic high jumpers can clear more than 2 metres. Pumas might be the best animals at jumping, able to leap 7 metres into a tree. But a team of researchers from the USA have just made a robot that jumps higher than any animal!

Difficulty: Tricky Mabel wanted to play noughts (O) and crosses (X), but she didn’t have anyone to play with. So she just took one go after another. Somehow, Mabel put Xs in 6 of the 9 squares without making a line of 3 Xs. Can you draw the board and work out which squares have […]

When people talk about fungi, what do you imagine? Mushrooms and toadstools are instantly recognisable parts, but there are many types of fungi that grow in different ways.

Unripe bananas are green, ripe ones are yellow and overripe bananas are brown. But can you make a banana that’s half brown and half yellow?

Difficulty: Tricky Willow has a staircase with 7 steps. She likes to walk down the staircase in different ways. Sometimes she takes 1 step at a time, and other times she skips a step and goes 2 at a time. If Willow mixes up these 2 types of steps, how many different ways can she […]