Résultats pour "David North" dans Science et technologie

Yo says his toy animal, polar bear, wants to know why the polar regions stay cold! Yo’s father shows him a globe of the earth! Did you know the sun doesn’t shine on the North and South Poles strong enough to keep it warm? Yo learns that because the earth is tilted, sunlight shines brightly in the middle of the earth, and dimly on the Poles. What will Yo learn when he sees a flashlight?

Native American tribes from the Northwest Coast learned to use the wood of cedar trees for many of their daily needs. Tribes used recycling to conserve resources hundreds of years ago. Pounding bark until it was fluffy to make diapers and with special thin branches called withes, cedar trees were soaked and used to make rope. What special technique did tribes use to take down big cedar trees?

In this enjoyable book, children will learn about a variety of endangered animals all over North America. Children will get a history of the American Bison. Also in this book children will learn about a sea lion that seems to mysteriously disappear without explanation! In this audiobook children will learn about other endangered animals. In this audiobook children will also learn about a coyote that could be extinct before we know it! They'll also learn about bats that are responsible for helping with the production of a North American favorite liquor and more!