Decide what feature(s) of the pattern represent species that students will be counting. For example, if you are using a pattern with different-colored dots, you might have students count 1 specific color. These fabric habitats can be easily reused from year to year. Spread paper dots made by a hole punch across a sheet of paper.
Students describe how biotic and abiotic factors affect the number of organisms and populations present in an ecosystem. In addition, students explore how organisms and their populations respond to short- and long-term environmental changes, including those caused by human activities.