Find out more about the wheel and axel, the lever, and the wedge. Find out more about three of the six simple machines: the wheel and axel, the wedge, the lever. Simple machines like these help us do ...

Giant electronic computers can solve difficult mathematical or logical equations in fractions of a second, but in other ways they are mental defectives. They have no imagination or initiative. They do ...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called ...

Science and Children is an award-winning, peer-reviewed, practitioners' journal for grade PreK–5 teachers, university faculty responsible for teacher preparation, and state and district science ...