Ecology
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Forest Ecosystem
Observe and manipulate the populations of four creatures (trees, deer, bears, and mushrooms) in a forest. Investigate the … feeding relationships (food web) in the forest. Determine which creatures are producers, consumers, and decomposers. Pictographs and line graphs show changes in populations over time.
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Measuring Trees
Measure the height, diameter, and circumference of trees in a forest. Count growth rings to determine the age of each tree. Grow the trees … for several years and investigate how growth is affected by precipitation.
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Plants and Snails
Study the production and use of gases by plants and animals. Measure the oxygen and carbon dioxide levels in a test tube containing snails … and elodea (a type of plant) in both light and dark conditions. Learn about the interdependence of plants and animals.
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Pond Ecosystem
Measure the temperature and oxygen content of a pond over the course of a day. Then go fishing to see what types of fish live in the … pond. Many different ponds can be investigated to determine the influence of time, temperature, and farms on oxygen levels.
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Prairie Ecosystem
Observe the populations of grass, prairie dogs, ferrets and foxes in a prairie ecosystem. Investigate feeding relationships and determine … the food chain. Bar graphs and line graphs show changes in populations over time.
