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P.E. Central Lesson Plan: Catch It
Purpose of Activity:
To teach students that marijuana causes a decrease in reaction time
Suggested Grade Level:
Materials Needed:
one pencil; one bucket of ice water
Lesson Plan:
Description of Idea

Ask a student to come up to the front of theclass. Hold up a pencil vertically by the eraser. Tell the studentto put his or her hand just below the pencil in a position sopointer finger and thumb are extended. Tell the student to prepareto catch the pencil with the thumb and pointer finger. Drop itbetween the thumb and finger andsee if the student can catch it (Usually he or she is successful).

Now have the student soak his or her handin the ice water for a few minutes. Repeat the same activity.It should be obvious that the first performance was better thanthe second. Reaction time was better the first time.

Explain to the students that people who usemarijuana experience decreased reaction time even when their bodyparts are warm.
Bob Wright in Holland , PA . Posted on PEC: 6/14/2000.
This lesson plan was provided courtesy of P.E. Central (
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