This is a great optical illusion for kids. Look at both of the center dots in the image above. Which center spot is bigger – the one on the left or the one on the right? They are both the same?! Wrong. Actually, the one on the right is bigger. Hahaha, did I trick you with this eye trick? That’s why it is a good optical illusion for kids – after showing several of the optical illusions, you start to see a pattern, but throw this baby in there and it’ll sometimes get a laugh. If you’d like to see the same optical illusion where they actually ARE both the same, check out the inverted image below. .