In this fertilization worksheet, students complete 10 short answer questions about the phases of fertilization then place 6 events of fertilization in the appropriate order on a timeline.

Pupils take a personal inventory about behaviors. They determine if there are risky behaviors present that could be harmful. The inventory is used to help students examine how to make healthy decisions.

This lesson will describe the stages of development of an embryo during pregnancy.

Click on any embryo and start exploring one of the 23 stages of development during the 8-week embryonic period.

This multiple-choice quiz on human fetal development allows students to get hints for each question and check their answers after submitting.

[Free Registration/Login may be required to access all resource tools.] While a woman is pregnant, the developing baby may be called an embryo or a fetus. The embryo stage lasts until the end of the 8th week after fertilization. After...

[Free Registration/Login may be required to access all resource tools.] Describes how the embryo forms specialized cells and organs.

Scientists can use the research they gather from studying embryos of dogs, lizards, fish, and chickens to better understand human embryos. How is this possible? You'll find out with this Exploratorium resource.

There are descriptions of 8 different prenatal tests that can be used to track the health and development of a baby. The risks of the tests are also included.

The miracle of life is featured in this wonderful series of short videos and journal entries. A variety of topics are covered in this well written, authoritative piece.

Discover the development of an embryo. Beginning with fertilization and progressing through each stage in the first trimester and continuing every two weeks for the second and third trimesters. This site is meant for medical students and...

Students learn about the development of blood vessels, and how this contrbutes to fetal circulation.

This site contains information on the signs of pregnancy, prenatal care objectives, and pregnancy associated discomforts.

Understand fetal growth during pregnancy in humans.