Imagine you have a toy robot, and this robot loves to march forward. However, it can’t march […]
Imagine you are on a playground, and you’re riding a merry-go-round. As the merry-go-round spins, you feel […]
The Pythagorean Theorem, which states that in a right-angled triangle, the square of the length of the […]
Once upon a time in a small village in England, there lived a curious and imaginative boy […]
