Newton't first law of inertia also applies to rotations – and comes in handy when balancing a stick on a fingertip.

The famous table cloth trick can be simplified to take just a moment in the classroom – without loosing any of its appeal, but actually increasing its educational clarity.

A straw and a toothpick can turn into a pump with a twist of your fingers! Once you have secured anything you want to stay dry, this fun experiment is a good way to introduce centrifugal forces and the principle behind many ...

Centrifugal forces are usually demonstrated in situations where the centrifugal force is exactly countered by the centripetal force. This can lead to the misconception that 'centrifugal' and 'centripetal' are merely two names for the same force acting in different directions. Why not ...