Along came a spider, who sat down beside her. She screamed, but RJ wouldn't smash it because spiders are a limiting factor for other insects in an ecosystem. In this video, other common limiting factors for populations are listed....

A change in a parameter can end in overpopulation. The resources gives pupils the opportunity to control the parameters of rabbits and wolves in a natural setting. Using the set parameters, the simulation runs and displays the population...

In this ecosystem exploration worksheet, learners complete 2 prior knowledge questions, then use "Forest Ecosystem Gizmo" to conduct several activities, completing short answer questions when finished.

Three types of symbiosis are explained: parasitism, commensalism, and mutualism. This is done with colorful animation and lively dialogue in a straightforward and easy-to-follow manner. Have your ecology class watch this at home and then...

In this ecology community status worksheet, students research their state's ecosystem, make a chart of the biodiversity, analyze the chart and identify issues with wetland species.  This page has several links to helpful web resources.

In this bluebirds worksheet, students categorize bluebird species found in their state and define vocabulary related to it. Students complete 6 vocabulary words.

In this ecology instructional activity, students read the vocabulary words and then categorize a species found in a field, meadow, or fencerow in their state or region. Students complete 6 problems.

In this ecology vocabulary exercise:  wetlands activity, students read the definitions of 8 words, then categorize a species found in a wetland in their region.  This page has numerous links to helpful web resources.

In this rainforest worksheet, students watch a video of Prince Charles wanting to save the tropical rainforest and then fill in the blanks to sentences about the video. Students complete 12 sentences.

Learn what happens to different populations of organisms as their ecosystem changes. Design your own experiment and make your own guesses with what the result will be with this virtual ecosystem. Also experiment with producer/consumer...

Did you ever want to be a hawk? In this virtual ecosystem, students will take on the role of a hawk and try to catch rabbits on a snowy field. Students will see which rabbits have adaptations that allow them to blend into the environment...

A simulator reviewing over the concepts of ecosystem equilibrium.

Experiment with variations in grass to see which size grows best with different amounts of water. Understand that grass that can live in different levels and change to its environment has a better chance of surviving. Also, experiment...

A series of nine maps with accompanying explanations. They show how population growth has affected the environment around the world in terms of water availability, climate change, land and forest use, and more. There are both interactive...

An interactive activity where students study how two species of producers are affected by a consumer. By completing several virtual experiments and collecting data, students will be able to summarize what plants can do to defend...

Build a dam in the middle of an ecosystem and observe how the population of plants and animals adapt to their new environment with this science simulation. Learn how the populations adapt to survive in their new habitat. Then remove the...

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...

Build your own ecosystem, and explore the effects of these interrelationships.

In this ecosystem consisting of hawks, snakes, rabbits and grass, the population of each species can be studied as part of a food chain. Disease can be introduced for any species, and the number of animals can be increased or decreased...

This bustling game is a race to help Plum eliminate introduced or invasive species before they crowd out the native populations.