Curated OER
Taking Action
Students use the net they make to dip macroinvertebrates at or below the surface. The flat side of the net allows pressure on the substrate so that organisms do not escape under the net. Two students hold onto the handles and submerge...
Curated OER
How Many Bears in the Forest?
Third graders model the tag and recapture of bears and use proportions to estimate the population of the bears in their forest. This is a statistical sampling method used by scientists and naturalists to determine population numbers.
Curated OER
Working With Environmental Issues
Students consider the source of disease and parasites in West Africa. In this environmental issues lesson, students read "Working with Environmental Issues," by Fred Koehler. Students participate in an activity that requires students to...
Curated OER
Working With Environmental Issues
Pupils begin the lesson by completing a survey about how much and what types of water they drink on a daily basis. Using a worksheet, they calculate the amount of water an American uses each day and the amount their own family uses. In...