Physical Science

4 - 8 years. Long ago, dinosaurs ruled the Earth. Then, suddenly, they died out. For thousands of years, no one knew these giant creatures had ever existed. Then people began finding fossils -- bones and teeth and footprints that had turned to stone. Today, teams of experts work together to dig dinosaur fossils out of the ground, bone by fragile bone. Then they put the skeletons together again inside museums, to look just like the dinosaurs of millions of years ago. Paperback. 32 pages.

Grades 1 & up. Wide mouths for easy measuring. Set of 5 unbreakable plastic beakers nests together for easy storage. Includes 50 ml, 100 ml, 250 ml, 600 ml and 1 liter measures.

Grades K - 2. Teach scientific concepts and the inquiry process with hands-on investigations that improve students' critical thinking skills. Students will learn the scientific process and build content knowledge through collaborative group investigations. Scaffolded activities support differentiation and extension activities are included. Each Guide includes a Resource CD with reproducibles. 176 pages.

3 years & up. Helps develop mathematical skills through discovery play as children move the monkeys around to keep the tree balanced. Includes one tree and 6 monkeys.

4 years & up. This set of six books delve into the ecosystems and climates found on planet Earth in an engaging and age-appropriate way.

What is a fossil? Sometimes it's the imprint of an ancient leaf in a rock. Sometimes it's a woolly mammoth, frozen for thousands of years in the icy ground. Sometimes it's the skeleton of a stegosaurus that has turned to stone. A fossil is anything that has been preserved, one way or another, that tells about life on Earth. But you can make a fossil, too - something to be discovered a million years from now - and this book will tell you how.