Big Machines at Work
3 total works
Trains are used to carry everything from cargo and animals to people. But how do trains move? Who drives them? Learn more about these important machines inside.
Photographs and simple text describe what airplanes look like and what they do.
Photographs and simple text describe what airplanes look like and what they do.
Simple text describes the parts of a tractor, how they work, and what they do.
