Using the TI 73 and CBL™ to collect samples of water for temp, pH, etc connecting math and science curriculums in the middle school.
Before the Activity
Students need to understand how to graph using the TI-73 as well as a thorough understanding of the procedures for taking the measurements. Students will also discuss predictions about the temperature readings they will receive.
During the Activity
See attached lesson plan. Make transparencies of key steps so that students may practice and become familiar with technology used prior to experimenting outside in a lake, river or creek.
After the Activity
Students are able to incorporate pre-algebra by discussing linear regression and line of best fit. Extensions could include water quality, etc.
Discuss the students original predictions.
How do the graphs of the data support the predictions?