In the leveled reader Baseballs, Hockey Pucks, and Busy Ants: A Look at Linear Motion, fundamental scientific concepts in physics are explained through simply written text and colorful, fun illustrations. Young readers discover that any object moving in a straight line has linear motion. When moving in a straight line, objects such as hockey pucks, baseballs, and bicycles have linear motion. Living things such as ants, snails, horses, and people have linear motion when they are moving in a straight line. Children are encouraged to think of other examples of linear motion. A pronunciation guide of scientific terms is included. 24 pages filled with engaging, colorful illustrations. Reading Level 1-3, Interest Level 2-5.