Wendy Pfeffer Knihy

In the fall, pumpkins are everywhere: in the garden, in the supermarkets, and on doorsteps. But do you know how they grow from a tiny yellow seed to a big orange pumpkin? Read and find out! Introduce basic science concepts to young children and help satisfy their curiosity about how the world works.

Let's-Read-and-Find-Out Science is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.This picture book about the arctic fox's dangerous winter journey is another strong entry in the award-winning Let's-Read-and-Find-Out series!

Describes the year-long metamorphosis from tadpole to frog.

The science, history, and cultural significance of the shortest day of the year: The Winter Solstice! The beginning of winter is marked by the solstice, the shortest day of the year. Long ago, people grew afraid when each day had fewer hours of sunshine than the day before. Over time, they realized that one day each year the sun started moving toward them again. In lyrical prose and cozy illustrations, this book explains what the winter solstice is and how it has been observed by various cultures throughout history. Many contemporary holiday traditions were borrowed from ancient solstice celebrations. "Using clear, concise language, Pfeffer discusses important ideas behind the shortest day of the year, such as the change from autumn to winter as well as the concept of the Earth's tilting away from the sun…. While appealing to a younger audience, this treatment combines the cultural approach of Ellen Jackson's The Winter Solstice (Millbrook, 1994) and the activities of Sandra Markle's Exploring Winter (Atheneum, 1984; o.p.). Pfeffer uses an easy, comfortable tone for conveying the basic information, and the end pages will provide additional opportunities for would-be astronomers to explore the principles on their own." —School Library Journal Simple science activities, ideas for celebrating the day in school and at home, and a further-reading list are included.

Crawling through the dirt, worms are hard at work, helping plants to grow. Worms help the fruit and vegetables we eat by loosening the soil and feeding the plants. Read and find out about these wiggling wonders!

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

Describes how dolphins communicate with each other in squeaks, whistles, and pops.