CK-12 Foundation
Ck 12: Biology: Embryo Growth and Development
[Free Registration/Login may be required to access all resource tools.] Describes how the embryo forms specialized cells and organs.
Exploratorium
Exploratorium: Which Embryo Is Human?
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.
Other
Story md.com: Conception to Birth
See the amazing process of human conception followed by the development of the embryo through each week of the pregnancy to the birth.
Other
The Visible Embryo
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...
McGraw Hill
Glencoe Biology: Human Development Before Birth: Self Check Quiz
This multiple-choice quiz on human fetal development allows students to get hints for each question and check their answers after submitting.
PBS
Pbs Nova: Guess the Embryo
Every animal starts out as a single, fertilized cell. What happens then? Launch an interactive that showcases four similar-looking embryos. Can you guess what each one of them actually is? Watch them develop.
Sophia Learning
Sophia: Embryonic and Fetal Development
This lesson will describe the stages of development of an embryo during pregnancy.
Khan Academy
Khan Academy: Frog Development Examples
How do you build a frog from a single cell? Learn how body axes are established and nerve tissue is induced in frog embryos.
CK-12 Foundation
Ck 12: Life Science: Pregnancy and Childbirth
[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...
Sophia Learning
Sophia: Fertilization and Early Development
This lesson will explain the processes involved in fertilization of a female egg. It is 5 of 5 in the series titled "Fertilization."
Exploratorium
Exploratorium: Single Cell to Embryo
Watch this brief animation of the process of a zebrafish egg developing from a single cell into an embryo in 50 hours. Click on other links to watch animations of a zebrafish cell division, migration and differentiation.
Northern Arizona University
Northern Arizona University: Embryos and Evolution
In this lesson, students study the embryos of different organisms at three stages of development to look for features that suggest a common ancestry.
CPALMS
Cpalms: Name That Embryo
In this lesson, learners will look at images of embryos from different organisms and identify similarities and differences between them to indicate possible evolutionary relationships. Includes PowerPoint and student handouts.
University of Wisconsin
University of Wisconsin: Amphibian Embryology
This tutorial goes into great detail describing the embryological development of amphibians. Written explanations, photos and quicktime movies are all included.
Other
Cte Online: Butte County Office of Education: Evolution and Embryos
[Free Registration/Login Required] A detailed lesson with downloadable PowerPoints and student handouts that examines how the study of comparative embryology provides support for the theory of evolution.
PBS
Nova Online: Windows on the Womb
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.
PBS
Nova Online: Life's Greatest Miracle
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.
University of Illinois
University of Illinois Urbana Champaign: Chickscope From Egg to Chick
Are you interested in a science project of hatching chicks? This website is designed to help you study incubation and embryonic development of chicken eggs. Illustrations also show the parts of an egg and the stages of embryonic...
Exploratorium
Exploratorium: Microscope Imaging Station: Cell Development
This interesting site provides videos and photos of cells going through the process of cell division. Observe Zebrafish development and Sea urchin embryo cell division in video format.
Exploratorium
Exploratorium: Cual Embrion Es Humano?
An exhibit that explains why the embryos of vertebrates look so much alike.
OpenStax
Open Stax: Anatomy & Physiology: The Embryologic Perspective
Students learn how the different stages of embryonic development relate to the adult structures of the central nervous system, and understand the growth and differentiation of the neural tube.
Alabama Learning Exchange
Alex: Why Comparative Embryology Matters in the Real World
For this lesson, middle schoolers compare similarities in the embryos of different organisms to look for features that would indicate common ancestry. They will then investigate how understanding this aspect of evolution has real-world...
Khan Academy
Khan Academy: Human Embryogenesis
Explains what happens during embryogenesis, the first eight weeks of pregnancy.
CK-12 Foundation
Ck 12: Plix Series: Comparative Anatomy: Comparative Embryology
[Free Registration/Login Required] Match the animals with their embryos and answer questions about their evolutionary ancestry.