Rice University
Biology for AP® Courses
An eight-unit electronic textbook provides a guide to AP® Biology. Each of the 28 chapters include an introduction, multiple lessons, a summary, review questions, and test prep questions. Teachers see how each lesson connects to a big...
CK-12 Foundation
Ck 12: Life Science: 11.6 Skeletal System
Learn the function of the bones in the human skeletal system.
CK-12 Foundation
Ck 12: Life Science: 11.8 Joints
Understand the structure and function of different types of joints in the human body.