What are solids? How are they different from liquids and gases? How can they be changed? Find out the answers to these questions and much more.
What is light and how does it help us to see? What is reflection? How does light form shadows? Find out the answers to these questions and much more.
What is a magnet? Why are some materials magnetic? How does a compass work? Find out the answers to these questions and much more.
What is electricity? How does a circuit work? Why do batteries only work if you put them in the correct way? Find out the answers to these questions and much more.
What is a force? How do forces make things move--or stop? How does the force of gravity affect life on Earth? Find out the answers to these questions and much more.
How can African wild dogs hunt animals ten times their size? What does the howl of a coyote mean? Why do some solitary hunters live in packs? Discover the answers in this engaging book and learn about the many ways living in a pack helps animals survive. Free downloadable Teacher's Guide available.
Why do belugas join pods to migrate? How do dolphins protect others in their pods? Why are pods important to some baby animals for survival? Discover the answers in this fascinating book and learn about the many ways living in a pod helps animals survive. Free downloadable Teacher's Guide available.
Jump into orbit around one planet in our amazing solar system: Venus! Take a fact-filled flight to learn what makes Earth's closest neighbor so special. Explore its stinky atmosphere, lava-covered surface, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Uranus! Take a fact-filled flight to learn what makes this ice giant so special. Explore its many moons, its high-pressure atmosphere, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
How do schools of fish confuse predators? Why do similar fish shoal and school together? Why do some fish live in groups only when they are young? Discover the answers in this colorful book and learn about the many ways living in schools or shoals help fish survive. Free downloadable Teacher's Guide available.
Rocks and minerals are all around us, but they're not all the same. Discover sedimentary rocks and find out how they form, what makes them unique, and how we use them. Explore some sensational sedimentary rocks around the world, such as Australia's Painted Cliffs. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Saturn! Take a fact-filled flight to learn what makes the ringed planet so special. Explore its many moons, stormy skies, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
How do penguin colonies care for their young? Why do great blue herons migrate in groups? How do prairie dogs warn others of danger? Discover the answers in this interesting book and learn about the many ways living in a colony helps animals survive. Free downloadable Teacher's Guide available.
Jump into orbit around some amazing objects in our solar system: dwarf planets! Take a fact-filled flight around Pluto, Ceres, Eris, Haumea, and learn what makes them so special. Explore their icy surfaces, their moons, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Neptune! Take a fact-filled flight to learn what makes this ice giant so special. Explore its gassy atmosphere, backward-spinning moon, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Mercury! Take a fact-filled flight to learn what makes this tiny planet so special. Explore its speedy travel through space, giant craters, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Rocks and minerals are all around us, but they're not all the same. Discover metamorphic rocks and find out how they form, what makes them unique, and how we use them. Explore some marvelous metamorphic rocks around the world, such as Japan's Susa Hornfels. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Rocks and minerals are all around us, but they're not all the same. Discover minerals and find out how they form, what makes them unique, and how we use them. Explore some marvelous minerals in places around the world, such as the lakes of Mount Kelimutu, Indonesia. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Mars! Take a fact-filled flight to learn what makes the Red Planet so special. Explore its double moons, giant craters, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Jump into orbit around one planet in our amazing solar system: Jupiter! Take a fact-filled flight to learn what makes the Gas Giant so special. Explore its many moons, stormy skies, and more. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
The control and command center of the whole body, we wouldn't be able to breathe, have a heartbeat, avoid danger, or sleep without the nervous system. Find out what illnesses affect the nervous system and how medical research has advanced our knowledge. Full-color illustrations help readers visualize the nervous system at work. Free downloadable Teacher's Guide available.
The average person takes 17,000 breaths per day. This fascinating book examines the mechanisms that make breathing work and the diseases that make breathing difficult. Full-color illustrations help readers visualize the respiratory system at work. Free downloadable Teacher's Guide available.
Rocks and minerals are all around us, but they're not all the same. Discover igneous rocks and find out how they form, what makes them unique, and how we use them. Explore some incredible igneous rocks in places around the world, such as the Hawaiian Islands. Includes a support page of teaching tips for caregivers and teachers. Downloadable Teacher's Notes available.
Your digestive system is like a production line. Food, drinks, or pills travel through tubes, filters, and holding rooms, as body chemicals work to extract nutrients. This fascinating book explores gut microbiomes, human waste, and how the digestive system identifies problems. Full-color illustrations help readers visualize the digestive system at work. Free downloadable Teacher's Guide available.
The immune system is a large network of cells, tissues, and organs that work together, acting like a fort with guards to keep out risky viruses and bacteria and destroy invaders. Readers will learn how researchers are striving to improve the body's immune system to fight off disease. Full-color illustrations help readers visualize the immune system at work. Free downloadable Teacher's Guide available.
