Is It Hard or Soft?

A nail is hard. A cotton ball is soft. Why are some objects hard and others soft? Find out in this series about materials and their properties. Informative, at-level text and engaging photographs help readers understand the differences between hard and soft materials.

Binding Type: Hardcover
Publisher: Pebble Books
Published: 08/01/2021
ISBN: 9781977131782
Pages: 24