- Muscles shorten, or contract, to move bones.
- Muscles can only pull; they cannot push.
- Muscles often work in pairs.
- Can muscles exercise continuously?
- Would your muscles get tired? Why or why not?
- In today's activity, we are going to find out exactly what would happen if you exercise a muscle too much.
Do page 132 in Teacher's Manual.
- Partner students up with sticks.
- Each partnership needs a clothespin.
- I can operate the online stopwatch for the whole class.
- Describe the technique for using the clothespins. Explain rules and how to count.
- Students need to record information on pages 22-26 in their Science Notebooks.
- Graph data on Create-A-Graph and post graphs on blogs.
- Write a one paragraph reflection, and answer the following questions:
- Was it difficult to use the same technique throughout the whole experiment?
- How did you hands and fingers feel BEFORE, DURING, and AFTER the experiment?
- Describe how your data changed over time.
- What errors or inconsistencies might have affected your results?
- Why did your hand strength change over the course of this experiment?
- How do you think your muscle cells get oxygen, nutrients, and water to make the energy they need to function?
- What do you think you could have done to prevent your muscles from tiring?
- What should you do if you experience muscle fatigue in the future?
Read pages 49-55 in your SRB's.