(Paperback)

"Learn about how a screw works! Beginner readers and budding young scientists will love learning about using simple machines in everyday situations. Along the way, readers will be supported by expertly leveled text, a strong text-photo match and appropriate text load. Readers will be excited to dig in and learn all about simple machines and basic physics concepts."--Publisher's description.

(Paperback)

What makes our car go and our lights glow Energy! Learn about clean, renewable power made by the sun, wind, water, and the earth.

(Paperback)