Mississippi Science HAP.6.5
The Standard
- HAP.6
- Students will investigate the structures and functions of the nervous system, including the cause and effect of diseases and disorders.
Enrichment: Plan and conduct an experiment to test reflex response rates under varying conditions. Using technology, construct graphs in order to analyze and interpret data to explain and communicate conclusions.
2026 Mississippi College- and Career-Readiness Standards for Science · Nervous System
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students plan and run a test of how quickly a pupil responds to light under two conditions. They time several trials, graph the results in a spreadsheet, and use the data to explain what they found.
What Mastery Looks Like
- A student changes one condition while keeping the lamp, distance, and timing method the same. They graph average response times, identify which condition was faster, and explain that the pupil response does not require a conscious decision.
Common Misconceptions
- Students may call a ruler-drop reaction test a reflex test, though catching the ruler involves a conscious response. They may also read a taller response-time bar as faster, when it means a longer delay.
How to Assess It
- Give students pupil response times of 0.25, 0.30, and 0.35 seconds after 30 seconds in dim light, and 0.40, 0.45, and 0.50 seconds after 90 seconds. Ask them to graph the two averages in a spreadsheet, identify the faster condition, and name one variable to keep the same.
Lesson moves
Ways to Teach It
Film pupil responses in slow motion after 30 and 90 seconds in dim light, using the same room lamp and repeating each condition.
Ask: Why is measuring pupil response different from timing how fast someone catches a dropped ruler?
Give pairs six trial times and have them race to calculate averages, then check whether their graphs label longer times as slower.
Read a mock eye exam note with unequal pupil response times, then list what the doctor should recheck before drawing a conclusion.
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