Prove it yourself!

The stubborn coin

( An experiment about inertia)

Every object remains in a state of rest or, if it is in motion, continues to move. This is called inertia. If you want to test it, make this simple experiment with a coin. Put a thin, smooth card on top of a glass. Then put a coin on the centre of a card. Now with the middle finger of your hand shoot the card off the glass. Instead of going with the card, the coin will drop into the glass. Inertia kept the coin behind when your card was shot.

A game

Pig's tail

Draw a pig on a large piece of brown paper, and hang the picture on the wall. The players stand a few metres off the wall. Everyone must in turn go up to the picture and try to draw the pig's tail. Each player which is going to draw is blindfolded and has a piece of chalk in the hand.

The player who manages to draw the pig's tail in its right place wins. Besides, you may ask blindfolded players to try to draw a whole pig on the blackboard, and the best pig wins.