Patricia Armentrout
1) The pulley
Author
Series
Language
English
Description
Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.
2) The lever
Author
Series
Language
English
Description
Text and pictures introduce the lever, a simple machine used to change force and motion.
3) The wedge
Author
Series
Language
English
Description
Text and pictures introduce the wedge, a simple machine placed between objects to split, tighten, or secure a hold.
5) The wheel
Author
Series
Language
English
Description
Text and pictures introduce the wheel, a simple machine used primarily to make it easy to move heavy loads.
6) The screw
Author
Series
Language
English
Description
Text and pictures introduce the screw, a simple machine used primarily as a fastening device.