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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?

Oranges are delicious and packed with vitamin C. Their peel is also packed with a flashy, flammable chemical secret!

Rulers are great at measuring straight lines, but how do you measure a curvy line? Here’s one way, using a wonderfully messy diagram!

Do you have a favourite mug? This is my favourite. Not only does it hold my hot chocolate, it has a wicked tricky puzzle on it!

Here’s an old game with a modern twist! Compete with your friends to pop the last bubble.

By Beth Askham Why not try your hand at some food science? It’s as easy as apple pie to make these fruit straps. Then, pop the fruits of your work in your lunchbox as a sweet and delicious snack.

Most people are a lot larger than a piece of paper. But in this activity, you’ll be able to squeeze through a hole in a sheet of paper. With practice, you might even be able to fit through a hole in a business card!

Ever wondered how TVs can make so many colours? Make some coloured torches and learn to blend like a TV in this activity from our book, Puzzles and Projects.

By David Shaw and Domonkos Szabo The Parkes radio telescope, turned 60 this week! To celebrate, why not make a model of The Dish?

By Patrick Mahony Have you ever been surprised by a static shock? This clever device can measure electrical charge!