From the California Institute for Regenerative Medicine. Contains education modules related to stem cell research.

A great way to review with flyswatters!

Gives organizational tips on how to organize everything for a particular unit. Also has sample units available on the website.

Professional development programs for educators. Online science courses offered from the American Museum of Natural History. Can earn grad credit.

Cool site from PBS offering information on the different animal phyla. Also has activities and videos.

Cool animation where you have to choose the proper bases and sugars to build different nucleotides. Most appropriate for AP Biology or college level.

A paper shown in red, purple, and blue (with gradual changes between colors) to demonstrate microevolution and macroevolution (or the silliness of distinguishing the two)

contains great tips and links to services for finding fair use images, sounds, music, etc, for videos. Also gives several web-based solutions for creating short or full-length videos. Includes a few pages specifically about Animoto.

simple, easy to understand biology animations covering many topics such as hydrogen bonding between water molecules, the fluidity of the cell membrane, protein folding, channels used in membrane transport (gated versus non-gated), motor proteins, and much more

"Practical Biology provides teachers of biology at all levels with experiments that demonstrate a wide range of biological concepts and processes. Each practical may be used alone or as a starting-point for open-ended investigations or enhancement activities, such as clubs or open-day events. Experiments are placed within real-life contexts, with links to carefully selected further reading, enabling teachers to show relevance and illustrate the key principles of How Science Works"

Good info to review nerve impulses, action potentials, etc. Not anything interactive to use with students, but a good overview that is easy to understand.

Lots of searchable activities for academic assistance, enrichment, college and career readiness, etc, aligned with Texas state standards. All subject areas.

lots of lessons related to the brain and the nervous system. Addresses topics such as how neurons fire, addiction, memory, brain dissection, and much more.

a variety of activities related to evolution from the amazing Learn.Genetics site. Addresses misconceptions, geologic time, fossil and DNA evidence, eye evolution, and more.

A large collection of links to virtual "field trips". Not sure they all technically fall under the "field trip" classification, but it is a good collection of sites nonetheless. Covers all subject areas, but here are some examples for science: biomes, biomes of North America, clouds, constellations, Mars, microbe zoo, and many more.

have students create organelles and turn the classroom into a giant cell that other classes can take a tour of

lesson plans from Google spanning all subject areas--of science note, there are plans on geologic time, epidemic outbreaks, scientific method, etc.

a kinesthetic activity to model how the digestive system works

online anatomy and physiology text with labeled images of body systems

a site with basic information on plant adaptations in specifib biomes (taiga, desert, tundra, grassland, temperate rain forest, tropical rain forest, deciduous forest, in water, etc)