This resource focuses on the biological concepts of heart rate,
homeostasis, and designing a controlled experiment.
There are two activities.
ACTIVITY 1 – GRAPHING DATA: HEART RATE IN DAPHNIA
This activity summarizes a fairly common high school lab activity that requires observations of live specimens under the microscope. If you do not have time or equipment to perform this lab with your students, this pre-collected data is a good way to describe how this lab would work.
If your students are not familiar with Daphnia, you might want to start with this activity, which includes an introduction to Daphnia.
ACTIVITY 2 – HUMAN HEART RATE DURING EXERCISE
This activity is a fairly straightforward graph analysis of the rise and fall of human heart rate during and after exercise. There are three multiple choice questions that accompany the graph.
The two exercises together provide a stepping stone into a comparison of Daphnia and human circulatory systems, and how homeostasis is restored (or in the alternative – what happens when homeostasis cannot be maintained.)
COMPLETE ANSWER KEY INCLUDED.
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