This is the information and sales site for the National Science Teachers Association (NSTA) "SciGuides", which are structured lesson plans that use existing websites. Each guide begins with a description of its contents, narrowing down into specific themes. Themes are described and broken down into keywords which point to supporting Internet resources. K-4 guides include Life Cycles and Inherited ... Full description.

This portal is geared toward younger visitors to the American Museum of Natural History website. It offers links to information, activities, games and quizzes in various "ologies," such as archaeology, paleontology, and entomology. The site presents profiles of scientists in each field as well as students who are interested in each field. Students can also collect various "ology cards" as they progress ... Full description.

This is a series of interactive modules that explore the history of life on Earth, while focusing on the processes of science. Each module contains suggested lesson plans and an extensive teacher's guide. In addition, each module has a suggested grade level and an adaptable grade level. Full description.

This National Aeronautics and Space Administration (NASA) website allows students to investigate biomes and then test their knowledge by completing missions. The site provides basic data about each biome such as temperature, precipitation, vegetation, location, description and links. Biomes discussed include coniferous forest, temperate deciduous forest, desert, grassland, rainforest, shrubland and ... Full description.