Schmahl Science Workshops educate 32,000 children a year in South Bay schools It’s not unusual for first graders to gather around a teeter-totter. On a recent Friday morning at Hayes Elementary School ...

When you push or pull with a simple machine, you are applying a force and doing work. And, if you get more force out of a machine than you put into it, then that machine has a mechanical advantage.

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 ...

It’s not unusual for first graders to gather around a teeter-totter. On a recent Friday morning at Hayes Elementary School in south San Jose, they were doing just that — but indoors. All in the name ...

Click to share on Facebook (Opens in new window) Click to share on Twitter (Opens in new window) Click to print (Opens in new window) It’s not unusual for first graders to gather around a ...