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It’s happened to all of us – the computer program you’re using starts thinking and won’t respond. Sometimes, you just need to wait for it to finish what it’s doing. But other times, it’s stuck in a loop and it’ll never recover. So is it time to press the reset button?

This quiz looks at some of the shapes found in maths and science. Give it a go and see how you shape up!

Sienna’s teacher is writing up a wicked problem. First, the teacher writes all the numbers from 1 to 99 and then erases 10, 20, and all the other numbers that end in 0. “Listen up! Multiply all these numbers. Tell me the last digit and I’ll give you full marks on your next assignment.”

Learn about the different parts of plants, as well as the science of preservation, by making your own pretty potpourri.

A sea sponge gets attacked by a shark and is ripped into 100 pieces. Luckily, sea sponges can join back together after they’ve been broken apart. Some pieces form into groups of 7, and the rest form into groups of 29. In the end, there are no pieces left. How many sponges do we end […]

Difficulty: Extreme 123,456,789 is not a prime number. Is it possible to reorder its digits to give a prime number?

Difficulty: Extreme! George bought a bag of 70 lollies on Monday. He didn’t eat many on Monday, but he really liked the flavour. Every day after that he ate three more lollies than he had the previous day. The next Monday, George was about to eat his first lolly for the day and noticed the […]

Difficulty: Fun Jane has some Australian silver coins in her pocket. When buying an apple, she realises she has more than $1 in silver coins, but can’t make exactly $1 with her coins. How is this possible? (Silver Australian coins come in 5c, 10c, 20c, and 50c.)

Have you ever sat in a garden or park and noticed all the different colours in plants? In this activity, you can dig deeper into nature’s colours and find out the variety of pigments that give each plant their unique colours.

Difficulty: Fun While Eddie is away on holidays his swimming pool has a leak. Each day it loses half the water still in the pool. Normally, it’s 1.6 metres deep, but when Eddie gets home there is only 10 centimetres of water in the bottom. How long has the pool been leaking?