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At half-past three, what is the angle between the hands of a clock?

The Great Barrier Reef has had a rough time. Rising temperatures , storms and attacks from crown of thorn starfish are among the problems damaging the reef. This year, scientists are aiming to supercharge its recovery with a new robotic helper.

This week’s quiz tests all kinds of knowledge from common construction materials to Australian inventions. Can you get 5/5? If you’re after more fun science for kids, subscribe to Double Helix magazine!  

Jenny had a short, wide fish tank. She wanted to change the water, so she put the fish tank on a table and put a tall bucket on the floor right underneath. She was about to get a hose and siphon the water into the bucket, but before she started, she did some measuring.

You might not think about it much, but there’s an amazing planet under your feet. Dig down about 50 kilometres and the rocky crust begins to give way to the hot, soft mantle. Deeper down, the rocks get hotter and runnier, reaching temperatures of thousands of degrees.

Do you know your trees, moons and non-metals? We’ve got a bunch of tricky trivia here for you this round! If you’re after more fun science for kids, subscribe to Double Helix magazine!  

If you’ve ever seen the iconic movie The Dish, you’ll probably remember when two engineers turned the most famous telescope in Australia into a cricket pitch. Kids from across New South Wales got a chance to do the same, along with some of Australia’s biggest cricket stars.

Astronauts have nerves of steel. They ride controlled explosions, strapped to giant tanks of rocket fuel. And every now and then, things go wrong. Last Thursday, two space explorers didn’t quite make it to space – but they lived to tell the tale!

Tom’s just finished sewing a quilt! It’s made of lots of equal-sized squares of fabric sewn together. Currently, it’s 12 squares long and six squares wide. Tom tried putting the quilt on his bed, but it’s the wrong shape.

Have you ever wanted to experiment with the orbits of moons and planets? Time to make a gravity simulator!