The tundra ecosystem is vast, covering a large part of the far north. Countless animals and plants live there. So what difference could the loss of one animal species make? Follow the chain reaction, and discover how important lemmings are.

The inspiring story of NASA mathematician Katherine Johnson (the subject of the hit movie Hidden Figures). Katherine Johnson grew up during a time when women were not encouraged to excel in the fields of math and science, and when African-Americans were heavily discriminated against. But she was so good at math that she zoomed ahead of her elementary school classmates, attended a high school far away from home, and started college at age fourteen, taking difficult geometry classes taught just for her. She went on to become one of NASA's "computers who wore skirts," women who did calculations that helped the men engineers design flight plans and rockets. Katherine wasn't like other women. She asked lots and lots of questions, and she didn't stay out of design meetings that were previously just for men. She was so good at her job that she was asked to double check the calculations of a machine computer. Katherine made important contributions to the first flight into space, the first orbit of the Earth, and the first trip to the moon--and back--breaking barriers for African Americans and women everywhere. Author Suzanne Slade brings Katherine's story to life in this smartly written picture book biography, illustrated by debut artist Veronica Miller Jamison.

The villagers had tried expanding the school, but the money ran out before the project was finished. No money meant no materials, and that meant no more room for the students. Then one person got a wonderful, crazy idea: Why not use soda bottles, which were readily available, to form the cores of the walls? Sometimes thinking outside the box-or inside the bottle-leads to the perfect solution. Fountas & Pinnell Level Q

Wile E. Coyote s biggest desire is to finally get his hands on Road Runner. Watch as he invents clever traps using energy from fossil fuels, the sun, wind, and more. Will Wile E. s experiments with energy help him catch that bird? Or will he get zapped by his own plans? Find out more inside "

Come along on an animal adding adventure. Add baby animals to the adults to see how many there are all together. And while you are at it, learn what some of the zoo animals eat or what the baby animals are called. Follow the lost red balloon as it soars through the zoo. At the end of the day, count up all the animals you have seen. The For Creative Minds educational section includes: How many animals do you see?, Tens make friends, Adding by columns, Fact families, Food for thought, Animal matching activity, and Animal classes.

Where did that plastic bottle in your hand come from? And where is it going next? A plastic bottle's journey is filled with bounces, bumps and blasts. Pack your bags, and get ready to follow it on its incredible journey!

Where did that raindrop come from? And where is it going next? A raindrop's journey is filled with thrills, spills and chills. Pack your bags, and get ready to follow it on its incredible journey!

Where did that raindrop come from? And where is it going next? A raindrop's journey is filled with thrills, spills and chills. Pack your bags, and get ready to follow it on its incredible journey!

Focusing on the value of biodiversity and preservation, this richly illustrated series tells the compelling story of what would happen to an ecosystem if one key species disappeared. Each title includes tips on how kids can help protect our natural resources. It features: Maps; Sidebars; Full Colour; Glossary; Index; Read More Resources; and, Safe Web Sites.

The true story of the high-flying Harlem Globetrotters -- the team that changed basketball forever. In this book you will find one-finger ball-spinning, rapid-fire mini-dribbling, and a ricochet head shot! You will find skilled athletes, expert players, and electrifying performers--all rolled into one! You will find nonstop, give-it-all-you've-got, out-to-win-it, sky's-the-limit BASKETBALL! You will find THE HARLEM GLOBETROTTERS, who played the most groundbreaking, breathtaking ball the world had ever seen, and played a pivotal role in the desegregation of the National Basketball League (later, the NBA). With rhythmic writing and dynamic illustrations, Swish! is a celebration of the greatness, goodness, and grit of this remarkable team.

This title explores how mountains have risen only to dwindle to dust. Readers discover how igneous, sedimentary, and metamorphic rocks live, die and are reborn as part of the never-ending rock cycle.