Indiana Science HS-AP5-2
The Standard
Observe and identify the structure and function of the various neurons and neuroglia. Explain how the varying structures determine the specified function.
Indiana Academic Standards for Science (2023) · Integration and Coordination, the Nervous System
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students identify dendrites, cell bodies, axons, and myelin in cell images. They distinguish sensory, motor, and interneurons from glial cells, then explain how each cell’s shape fits its job.
What Mastery Looks Like
- A student explains how a motor neuron’s dendrites receive signals and its long axon reaches muscle. They trace a sensory signal toward the spinal cord. They identify an astrocyte’s contacts with nearby cells and the myelin an oligodendrocyte forms around axons.
Common Misconceptions
- Students may think the axon makes its own myelin. They may confuse dendrites with axons or assume glial cells carry impulses in the same way neurons do.
How to Assess It
- Give students a diagram of a motor neuron beside an oligodendrocyte wrapping its axon. Ask: Which cell carries the impulse, which makes myelin, and how does each shape help it do its job?
Lesson moves
Ways to Teach It
Build a motor neuron from pipe cleaners, then use clay to show an oligodendrocyte wrapping its axon with myelin.
Show sketches of a sensory neuron and a motor neuron; ask where each sends signals and which visible feature helps it do that.
Give pairs cards showing neurons and glial cells; have them match each drawing to a job and point to a feature that supports their choice.
Give students a short multiple sclerosis case about damaged CNS myelin; ask which glial cell is affected and why signals may slow.
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