Showing results 1 to 3 of 3
How Long Can You Hold Your Breath?
In this activity (on page 142 of the PDF), learners will compare breathing rates before and after hyperventilation to explore how reduced carbon dioxide levels in the blood lower the need to breathe.
Lung Model: Make a Lung and Diaphragm
By building a model of a lung and diaphragm, learners discover the function of various parts of the body's respiratory system.
Biotech in a Bag
In a series of three experiments, learners explore the basics of biotechnology using self-locking plastic baggies. Each experiment demonstrates a phenomenon or principle of biotechnology.