A series of twenty non-fiction science readers which engages children in the world around them. What makes fire burn? Why is water wet? What is air made of? You can find the answers to these and other questions about matter in Why Does Water Freeze?

A series of twenty non-fiction science readers which engages children in the world around them. Why is the sea salty? Why do boats float? Why do I feel thirsty? You can find the answers to these and other questions about water and weather in Why Do Raindrops Fall?

A series of twenty non-fiction science readers which engages children in the world around them. Where do animals live? Why do wolves howl? Can animals hurt me? You can find the answers to these and other questions about animals in Why Do Crocodiles Snap?

A series of twenty non-fiction science readers which engages children in the world around them. Why do swings swing? Why do swings stop swinging? What makes things change direction? You can find the answers to these and other questions about movement in Why Do Swings Swing?