Frogs and Development
http://www-cbd.ups-tlse.fr/organismes/nieuwkoop/nieuwkoop.html These are the drawings of various developmental stages of the frog, Xenopus laevis, the animal used in the video.
http://www-itg.lbl.gov/ITG.hm.pg.docs/dissect/info.html This is the virtual frog dissection kit.
http://worms.zoology.wisc.edu/frogs/mainmenu.html This is a site with pictures and movies illustrating development in frogs and other amphibians.
http://www.uoguelph.ca/zoology/devobio/34mmfrog/34fgintr.htm This shows cuts through a frog embryo so you can see what it looks like on the inside .
http://www.med.unc.edu/embryo_images/ These are outstanding images of human embryos at different stages of development.
http://www.devbio.com/ This is a site for the most popular college-level developmental biology textbook. It could be an excellent resource for instructors.
http://www.xenopus.com/ Contains links to news stories about Xenopus.
http://allaboutfrogs.org Fun frog pictures, facts, games etc.
Frogs and the Environment
http://www.npsc.nbs.gov/narcam Many of you have heard about malformed frogs and other amphibians in the environment.. They have multiple limbs, or are missing an eye or have other problems. No one is exactly sure what is causing these deformities, but one favorite hypothesis is that some man-made pollutant may be responsible. Go to the following web site for pictures of these animals.
http://www.mp2-pwrc.usgs.gov/frogwatch If possible, you can arrange a trip to a good frog habitat nearby and try to count as many frogs as possible. Make sure that you count normal as well as abnormal ones. If you do find abnormal frogs, note the abnormality and report it to the frogwatch web site.
Scientific American Articles
http://www.sciam.com/issues_directory.cfm Go here to access issues and selected articles over the last 4 years.
Nov 2000 Cloning Noah’s Ark. This introduces animal cloning technology and discusses how it might be used to help endangered species. It also discusses how it might be possible to clone your pet cat or dog.
April 1999 Growing New Organs. This is about tissue engineering and growing new organs like skin and even a nose to replaced damaged organs.
Worm Module Links
Links to articles on worms
http://www.wormdigest.org/articles.html/n/n The Worm Digest has a number of links to articles on worms. They emphasize how to grow them and their ecology.