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.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Science kits are a great way to get kids curious about our world and beyond. After all, these kits have ...

MR SIMPLING: "Step inside and have your mind blown!" ANGE: "Museum of marvellous machines, ooh this is it now I know those tickets weren’t cheap but it looks like it might’ve been worth it." MR ...