A bowling ball is heavy. A feather is light. Why are some items heavy and others light? Find out in this series about materials and their properties. Informative, at-level text and engaging photographs help readers understand the differences between heavy and light materials.

A nail is hard. A cotton ball is soft. Why are some objects hard and others soft? Find out in this series about materials and their properties. Informative, at-level text and engaging photographs help readers understand the differences between hard and soft materials.

A piece of silk is smooth. Tree bark is rough. Why are some objects smooth and others rough? Find out in this series about materials and their properties. Informative, at-level text and engaging photographs help readers understand the differences between smooth and rough objects.

LAND TOUR: This nonfiction, photo-filled science book for beginning readers describes the landforms that cover Earth's surface and the forces that create them. SCIENCE READERS FOR CHILDREN: The land on Earth can be high, low, bumpy, flat, and everything in between. Readers will explore the landforms that cover the Earth's surface. Buckle up! This Land Tour could be a bumpy ride! INCLUDES: This 24-page book for grades K—2 includes a photo glossary...

Book Features: • Ages 5-8, Grades K-2 • 24 pages, 8 inches x 8 inches • Simple, easy-to-read pages in Spanish with full-color pictures • Includes a photo glossary and a reading extension activity • Supports NGSS Dive Into Learning: In Mi Biblioteca de Ciencias de la Tierra y el Espacio: Una Excursión por la Tierra, kindergarten-second graders learn about all the different landforms on Earth and the forces that create them. Science...

CHANGES ON EARTH: This nonfiction, photo-filled science book for beginning readers describes the fast and slow changes on Earth. Readers will be captivated as they learn that Earth is constantly changing, sometimes in the blink of an eye, and sometimes over millions of years! SCIENCE READERS FOR CHILDREN: Look around at your environment. What do you notice? Earth is constantly changing, whether or not you can actually see it! Climb aboard as we explore...

Did you know that scientists are able to build with atoms, the smallest building blocks of the universe? Nanotechnology is changing our future a few molecules at a time. Learn more about how scientists work with the tiniest objects imaginable.

Who's that singing in the backyard? It's a cardinal! Find out where cardinals live, what they eat, and how to identify the birds and their eggs.

Who's that singing in the backyard? It's a Robin! Find out where robins live, what they eat, and how to identify the birds and their eggs.

Who's that singing in the backyard? It's a goldfinch! Find out where goldfinches live, what they eat, and how to identify the birds and their eggs.