Is It Hard or Soft? (Properties of Materials)
Amstutz, Lisa J.
1977131786

Is It Hard or Soft? (Properties of Materials)


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.
Free ShippingOn orders $50 or more. North America only.Learn More