Wonder readers. Science

"This book explains sources of light, how light creates shadows, and properties of shadows"--Back cover.

Simple text and illustrations introduce tiger cubs.

Introduces the four food groups and explains the importance of a healthy diet.

"Describes simple machines and how they are used"--Provided by publisher.

Simple text and photographs present leaders who have helped shape the world.

Simple text and color photos present endangered animals and how people are trying to save them.

Simple text and photographs discusses the study of rocks and different uses of rocks.