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This traditional Chinese puzzle, known as a tangram, reveals some surprising properties of squares!

Here are 5 fresh questions to juggle for this week’s quiz. Will you score high, or come crashing to Earth?

Can you find 5 consecutive (counting upwards) numbers that add up to 80?

Need a bag to carry your library books, or to tote home your shopping? Here’s a way to turn an old t-shirt into a new bag, no sewing needed, during Plastic Free July.

Australia has many amazing land snails. There are currently about 1,500 described species and another 1,000 waiting to be named.

This quiz explores science’s softer side. Will your score leave you feeling warm and fuzzy?

Difficulty: Fun A fast passenger train leaves Sydney Central station, headed for Broken Hill. At the same time, a slow freight train, moving at only half the speed of the passenger train, leaves Broken Hill station, headed for Sydney Central. When they meet, which train is closer to Sydney?

It sounds like a perfect way to make money – scientists from The Australian National University (ANU) are now selling random numbers over the internet! But before you start your own business writing whatever number pops into your head, there’s something special about these numbers.

Here’s a chance to create your own automatic fishing machine inspired by Aboriginal engineering. Automatic fishing machines were, and may still be, used by Aboriginal people to catch fish in shallow waters. This activity is based on a fishing machine invented by Aboriginal engineers and used near the Murray River.

How many 1s does it take to write out the number eleven thousand, eleven hundred and eleven?