Discuss the role of models in science.
Draw students' attention to the Key Ideas using means such as posters and transparencies.
Begin the section with Activity 6-1: Connecting Your Brain and Muscles, which answers the question, “How do Your Muscles Know What to Do?”
Point out the three types of muscles in Figure 6.1. Discuss examples and functions of each type.
Confirm that students can explain the differences between and involuntary and voluntary muscles and include examples for each.
Have the “Thinking Caps” from Activity 2-2 available when doing the Activity 6-2: Moving Muscles.
Review blood-brain barrier and Activity 1-1: Blood-Brain Barrier and the parts of the brain (Section 2) before discussing what parts of the brain coordinate body movements.
Activity 6-2: Moving Muscles reinforces the pathways of sensory and motor neurons.
Activity 6-3: The Nervous System and Muscles Working Together is a good follow-up activity for Activity 6-2: Moving Muscles.
Time permitting select from enrichment activities and unit projects.
Throughout and at the end of the section refocus students' attention on the Key Ideas.