With this kit you can build 7 K'NEX models as a jumping off point to learn about simple machines using gears.

Create, arrange, and explore the motions of gears with these builders. They will help you learn engineering as you transfer motion across several

Photographs and captions present the life of polar bears across the four seasons of the year. Topics covered include habitat activities, diet, an

Introduces black bears, discussing their physical characteristics, habits, diet, and reproduction.

Color photos fill this overview of bear species, which describes their histories, physical traits, biologies, habitats, diets, behavior, life cyc

With their big round ears, moon-shaped crescents, and irresistible personalities, there is plenty to love about moon bears. Full of fascinating f

This nonfiction picture book showcases all eight fascinating bear species, from favorites like pandas and polar bears to lesser known species lik