Visiting a museum is a way to learn about the past. Museums help people understand what life was like many years ago. They also show how the world has changed over time. Find out more in Museums, one of the titles in the Field Trips series.

Did you know that some hay balers can make bales that weigh up to 2,000 pounds? That is more than a bison weighs. Learn more about these machines in Hay Balers, one of the titles in the Farm Machines series.

Did you know that baby raccoons climb trees? Their mother teaches them how. Find out more in “Raccoons”, a Little Backyard Animals book.

Did you know that some harvesters can harvest 30 acres of crop in an hour? That is about the size of 23 football fields. Learn more about these machines in Harvesters, one of the titles in the Farm Machines series.

Did you know that crop sprayers come in many shapes and sizes? Small crop sprayers look like backpacks. Learn more about these machines in Crop Sprayers, one of the titles in the Farm Machines series.

Did you know that wolves have their babies in the spring? They take care of the babies in their den. Find out more in “Wolves”, a Little Backyard Animals book.

"Explore some of the exciting machines used on farms with the Farm Machines series"--

"The World Class Cities series takes readers on a journey to some of the world's most interesting cities, exploring their history, culture, and economic strengths"--

Pushing the roundabout makes it spin. Pulling the roundabout makes it stop. Learn more about what is pushed and pulled at the playground in At the Playground. This title is part of the Pushes and Pulls series, which has been developed for children ages 5 to 7.

Did you know that caterpillars turn into butterflies? They make this change inside a hard shell. Find out more in “Butterflies”, a Little Backyard Animals book.