Wendy Pfeffer

Learn how pumpkims grow from tiny seeds to big pumpkins. Pumpkins can be baked in a pie. Pumpkins can be carved into jack-o'-lanterns. Pumpkin seeds can be roasted for a healthy snack. But how does a tiny seed turn into a big pumpkin? Read and find out what a pumpkin seed needs to help it grow!

An introduction to light and how it helps us to see profiles different kinds of light, including sunlight, firelight and electric light, and provides interactive experiments readers can perform at school or at home.

Explains how sounds are made and the purposes they serve for both humans and other animals.

Describes how and why daylight grows shorter as winter approaches, the effect of shorter days on animals and people, and how the winter solstice has been celebrated throughout history. Includes activities.

Describes how coral reefs form and discusses the plants and animals that live in them.