This activity is intended for beginning units that focus on scientific processes. It includes background information on the steps of the scientific method and then asks students to ask a question about lung capacity.
As a group, students develop hypotheses to answer the question or explain their observations. Then, students design an experiment where they identify the control group, and the independent and dependent variables.
Students then collect data using a spirometer, and present that data in the form of a table and a bar graph. Finally, students use their data to draw conclusions and discuss ways the experiment could have been improved.
The activity is designed as inquiry, so minimal input from the instructor is needed, though some guidance might be necessary to help students develop a testable hypothesis, and valid tests.
Grade Level: 11-12 | Time Required: 1 – 1.5 hours
HS-LS1-3 Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.