They then perform science and math tasks at each station. A variety of measuring equipment and calculators are used in the field to figure the answers to a series of math application puzzlers each cooperative group is given. Based on their field experience, students analyze their findings and make environmental decisions. This lesson incorporates the techniques and equipment stated above but focuses more on the interactions, energy flow , and habitat components within the system. New riparian sites and additional equipment will be used for those classes which have been to the beaver pond site or done this very popular lesson previously.
Students use soil augers at several sites to compare and characterize the soil.
In conclusion, each student makes a soil profile in a plastic tube to carry home as a reminder of their soils lesson. Following a brief discussion on biotic and abiotic factors of ecosystems, students will predict the conditions of their field site. Students will also collect and record temperature, pH, dissolved oxygen, and turbidity data. The data will then be analyzed in terms of health of the ecosystem, sources of error, and checking predictions. Each team of students will be given a starting point and a set of compass bearings and distances.