How do things move?

Presents an introduction to motion, in simple text with illustrations, describing how some things move in a straight line and how other things curve.

Presents an introduction to motion, in simple text with illustrations, describing how some things move by being pushed or pulled.

Presents an introduction to motion, in simple text with illustrations, describing how some things move fast and other things move slow.

Simple text and photos present several examples of things that float and sink, briefly describing light and heavy objects, animals that float and swim, and the act of skipping stones.