Readers learn how this simple machine makes it easier to split things apart or stop them from moving. They learn how thicker wedges need more force to split something apart than thinner wedges. By the end of the book, readers know the difference between complex and simple machines and how wedges are used in everyday life to make work easier.
While Velociprator means 'quick thief,' did this small dinosaur actually steal its food? Find the answer to this and other questions in this fascinating book.
Explains how trees are turned into pulp and how paper is made; discusses how toilet paper is rolled, perforated, and packaged; and how toilet paper becomes available to consumers.
A very simple introduction to the life and accomplishments of noted scientist and inventor Thomas Alva Edison.
Explains the ingredients and their purpose in toothpaste; discusses how toothpaste is mixed and packaged in a factory; and how toothpaste becomes available to consumers.
Explains what the water cycle is; describes the scientific method; and includes experiments testing different water cycle concepts.
Explains what taste and digestion are and how they work; describes the scientific method; and includes experiments testing different taste and digestion concepts.
Explains what plants are and how they grow; describes the scientific method; and includes experiments testing different plant concepts.
Explains what magnets are and their properties; describes the scientific method; and includes experiments testing different magnet concepts.
Explains what matter is and its different states; describes the scientific method; and includes experiments testing different matter concepts.
Explains what sound is, how it travels, and how we hear sound; describes the scientific method; and includes experiments testing different sound concepts.
Explains what simple machines are and what they do; describes the scientific method; and includes experiments testing different simple machine concepts.
Explains what soil is made from and what it contains; describes the scientific method; and includes experiments testing different soil concepts.
Explains what light and vision are; describes the scientific method; and includes experiments testing different light and vision concepts.
Explains what life cycles are and how plants and animals grow; describes the scientific method; and includes experiments testing different life cycle concepts.
Explains what insects are and how they live and grow; describes the scientific method; and includes experiments testing different insect concepts.
Did you know that a Stegosaurus weighed more than a pickup truck? Or that despite its fierce looks, it ate only plants? Learn more inside.
How did Spinosaurus get its name? What did it eat? Find the answers to these questions and more in this fact-filled book!
Drink it. Spill it. Splash it. Water is wet. But water changes as it warms up and cools down. This simple, colorful book teaches kids about the three forms of water.
Explains the different ingredients in soda pop; discusses how soda pop is made and packaged in a factory; and how soda pop becomes available to consumers.
A basic introduction to the planet Saturn, its size, composition, and place within our solar system.
Readers learn how this simple machine makes it easier to keep objects locked together. By the end of the book, readers know the difference between complex and simple machines and how screws are used in everyday life to make work easier.
Explains how salmon live and grow; discusses their migration, its purpose, and its route; and lists threats salmon may face on their migration.
Readers learn how this simple machine makes it easier to lift and lower objects. They learn about fixed and movable pulleys and when it is best to use each. By the end of the book, readers know the difference between complex and simple machines and how pulleys are used in everyday life to make work easier.
Amazing magnets are everywhere--on the refrigerator and inside machines and toys. Even Earth is a giant magnet! A magnet can be strong enough to lift a car. But magnets work only in a certain way. This simple, colorful book explores the attractive power of magnets.
