This is perhaps the best online resource for biological visual aids. Detailed drawings of everything from bacteria to chloroplasts to a map of the human nervous system. Also includes some microscopic detail photos, video clips, and PowerPoint presentations.

All of life on Earth classified in a taxonomic tree pattern (phylogeny), complete with articles, images, and links to more information. Also includes teacher resources.

A fun and friendly introduction to biology. Topics include cell structure & function, microorganisms, plants, invertebrates, vertebrates, and animal systems. Also includes online quizzes.

This site provides many colorful visual aids for cell biology, microbiology, microscopy, and immunology studies. There are interactive visuals, galleries, a quiz, and links to animations and other life science resources.

Interactive diagrams of the human body by system, with labels and brief explanations of features. Also includes some animations and tutorials.

An online exhibit on the heart and lungs, with great animations and interactive diagrams. Also includes lesson plans with printable activities. Contains some graphical material on the "videos" page which may not be suitable for all audiences.

Online collection of species: information, anatomy diagrams, photos, audio clips, and classification charts. Excellent resource for zoology studies, from preschool level exposure to the animal kingdom up through high school taxonomy exercises.

An impressive collection of resources on the animal kingdom. An animal sounds library, Animal Bytes, ecosystem info, online safaris and expeditions, and lengthy printable free teacher guides.

The Print 'n Go Animal Coloring Book from National Geographic: a fun way for younger kids to get in on the fun of science and for older kids to explore biodiversity. Many of these coloring pages feature details of the animal's anatomy. Brief information and relevant links are provided for each animal.

An extensive collection of articles written just for kids on a wide range of health-related issues including feelings, human body, diseases, safety, medicines, and staying healthy. Also includes online games and a Spanish version.

An abundance of lesson plans and resources for teaching nutrition to kids from preschool through elementary. Includes printables in PDF format. They also offer a few online nutrition games.

A variety of engaging activities for kids to learn how to eat healthily. There is also a teachers' site with lesson plans and other resources including student activity sheets.

A well-planned healthy living curriculum in four chapters, complete with printable lessons, worksheets, and other activities.

Simple and easy to navigate site providing a well designed lesson on botany. Includes sections on plant growth, plant parts, photosynthesis, pollination, seed dispersal, and adaptations. Also provides lesson plans and activities and a few animations and online quizzes.

Articles with accompanying resources on a variety of biology-related topics. Many articles are supplemented with "learn more links", class activities, lesson plans, and links for student research.

The National Health Museum produces this site for teachers and the general public to gain access to a broad spectrum of health information, news, and other biology-related resources.

Articles on health and human biology topics, medical encyclopedia, symptoms guide, diet & nutrition, health news, medical images, and more - a general reference resource on medicine & human bioscience.

Details of genetics from DNA through cloning and gene therapy. Includes a large amount of well-explained information as well as home activities, teacher resources, and lesson plans.

An abundance of resources for studying insects: short to full-length, child-friendly articles, some with student activities and other supplements; images; lesson plans; and more.