National Cancer Institute at the National Institutes of Health
Seer Training Modules: Introduction to the Reproductive System
Self-guided learning activity where students learn about the structure and function of the male and female reproductive systems. There is a short quiz at the end of the lesson to check for understanding.
CK-12 Foundation
Ck 12: Female Reproductive Structures
[Free Registration/Login may be required to access all resource tools.] Think producing millions of sperm each day is complicated?If producing millions of sperm each day, as in the male reproductive system, is complicated, that is...
CK-12 Foundation
Ck 12: Life Science: Human Egg Cells
[Free Registration/Login may be required to access all resource tools.] When a baby girl is born, her ovaries contain all of the eggs they will ever produce. But these eggs are not fully developed. They develop only after she starts...
CK-12 Foundation
Ck 12: Life Science: Fertilization
[Free Registration/Login may be required to access all resource tools.] The sperm and egg don't look anything like a human baby. After they come together, they will develop into a human being. How does a single cell become a complex...
CK-12 Foundation
Ck 12: Life Science: 11.69 Egg Cells
Understand the egg cells, and how they develop into a human being.
CK-12 Foundation
Ck 12: Biology: Fertilization
[Free Registration/Login may be required to access all resource tools.] Discusses the events that occur between fertilization and the embryonic stage.