Interact with the Cafe Wall Illusion.
Meteor, meteorite, meteoroid – what's the difference?
It's easy to fold a sheet of paper in half. But can you fold a sheet of paper in half ten times?
Search a geological map of Ethiopia for fossils.
You can mix just three colors of light to make over 16 million different colors!
Sometimes we can learn about outer space when space objects come to us.
Make your own refracting telescope from a pair of reading glasses.
These tricky pictures shift and change as you look at them.
Test your memory–and learn how to improve it!
Bring movie, TV, and cartoon images to life.
Your brain is always looking for blank spaces and filling them in. Sometimes, your brain leaps to the wrong conclusion. Then you get a surprise!
Make yourself giant or tiny with a snip of the scissors.
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