Hopscotch was originally a training exercise for Roman infantry. These frogs don’t know that history. They are just interested in jumping about on their lily…
This is a game for two frog catchers. There are a bunch of frogs to catch and one special frog. You and a friend are…
Imagine that all living things are made up of joints and bones . For example, here are two flexi-fish swimming happily along: You can…
Fashions come and fashions go, but the guru who starts a new fashion trend always takes a risk. One way to lessen this risk is…
This problem is best for people who can express numbers in different bases. An abacus is a mechanical device for temporarily storing numbers during a…
After an epic voyage across the Pacific, the Polynesian catamarans arrived on Rapa Nui (Easter Island) approximately 1500 years ago. The Island was a paradise…
Circuit boards are made by imprinting a conducting metal like copper on a non-conducting material like fibreglass. If it were not for circuit boards, connections…