However, students should be given the opportunity to choose their methods and therefore the materials to be used. The teacher will have to demonstrate how to collect gas by water displacement. It is assumed here that the students know how to use the computer probes to collect data. Students set up apparatuses but do not begin investigation until the TA initials have been received. Students proceed with the investigation using the computer probes and conventional data collection tools to collect their data.
Students calculate the rate of photosynthesis using the data.
Students graph the relationship between light intensity and evolved oxygen using the computer or graphing calculators. Their reports will be commented upon and returned. The concluding lab is the evaluation. Example questions for further evaluation. Students will have begun the school year discovering one another, using cooperative grouping.