man-made

The need for school buses first arose in the 1800s. For the first time in history, many children attended small or one-room schools, rather… Read more

Scrolls are an ancient method for preserving writings. Scrolls predated books as we know them today. The word scroll is French in origin, also called… Read more

The bow and arrow is an ancient weapon. The oldest arrowheads to be discovered are many thousands of years old. Until the Middle Ages… Read more

The basketball is the only piece of mobile equipment needed to play the game of the same name. Basketball has become an American… Read more

What is a microphone? Microphones are a type of transducer, a device that converts one form of energy into another. Microphones… Read more

An hourglass is an ancient method of telling time. It consists of a frame which supports two glass bulbs. The bulbs have a small passageway… Read more

The graduation cap, also called the square academic cap, Oxford cap, or mortarboard, is symbolic of graduation from a school or… Read more