Students explore DNA structure using materials such as Twizzlers, small colored gumdrops and/or toothpicks.

Students closely observe the natural world, record data, and notice patterns as the seasons unfold, they build a deeper understanding of seasonal change! The definition of phonology is the focus of this lesson and how it changes...

Students complete a unit of lessons on animals and animal conservation. They observe a square meter of ground outside the school, set up a model environment, analyze an owl pellet, grow bread mold, and explore various websites.

Third graders identify features of producers, herbivores and carnivores. They discuss the features that aid in survival for those animals. They organize animals into categories to complete the lesson.

Third graders research ecosystems, the work of ecologists, John Muir's contribution to the environment and an endangered species of their choice. They read books, participate in discussions, and write reports.

Students create graphic organizer webs that illustrate their thinking about seasonal physical and biological changes caused by changes in sunlight. They identify the central role of sunlight in living systems.

Students conduct an experiment to demonstrate how fruit fly populations are controlled by spiders. They observe a variety of environments with fruit flies and spiders and consider how vital spiders are to controlling the insect population.

Third graders complete activities to become familiar with the content and vocabulary related to biomes and ecosystems in order to mainstream into the classroom.

Young scholars determine

Students develop an action plan to prevent trash from becoming a problem in the future.

Students learn about energy flow in food webs, including the roles of the sun, producers, consumers and decomposers in the energy cycle. They model a food web and create diagrams of food webs using their own drawings and/or images from...

Students construct possible food webs for six different ecosystems as they learn about the roles of producers, consumers, herbivores, carnivores and decomposers.

A video and a short multiple-choice quiz on food webs that explains the difference between food webs and food chains, and the relationships that exist between organisms.

A comprehensive overview of food webs. Includes three videos: a half-hour show, a video short, and a short video where an expert answers children's questions. Other features of the site include facts, links, games and activities, a...

Explains the characteristics of food chains and food web; the different levels of producers, consumers, and decomposers; and the differences between food chains and food webs. Includes charts and a Venn diagram comparing the two.

Explains what a food web is, the complexity of one in a rainforest, and how energy flows through a food web.

This unit contains interactive lessons on animal ecosystems, animal classification, adaptations, and food chains.

Investigate the interdependence of wildlife in the Yellowstone ecosystem and draw an ecosystem showing the interdependence of life forms.

This tutorial review over food chains and how energy is transferred through them.

The Web of Life is a story told by a common garden spider at this site from Kids' Planet. Learn about the food web, and the roles and relationships of every living creature.

Omnivores, herbivores and carnivores are waiting for you. The food chain comes to life at this friendly site.

Learn how scientists classify different types of organisms in an ecosystem or in a food chain by their role and function as either a producer, a consumer, or a decomposer. Then play a game that tests your understanding of these important...

This activity allows young scholars to make a simple model food chain and observe how toxic chemicals can become concentrated in the bodies of consumers at the top of the chain.

Create the parameters of your own ecosystem by choosing which producers and consumers live there. Visualize how the food web operates and species populations change. This simulator mimics the food web within a typical ecosystem and gives...