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Hold up pictures of discus and cross-sectional pictures of discus.
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Discuss the phenomenon that takes place when an athlete throws a
discus including the Bernoulli Principle.
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Have a demonstration by a local high school athlete if one is
available
throwing the discus. Ask the athlete questions concerning his/her
technique in throwing the discus.
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Also discuss the importance of the angle of attack when the discus is
thrown, and how the spin is utilized in discus throwing to avoid a stall.
(The spin gives the discus angular momentum).
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Ask the students to draw a cross-section picture of the symmetrical
discus and label the component parts of Bernoulli's Principle that causes
the discus to experience lift.
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Have the students share their drawings in front of class explaining
the Bernoulli Principle that causes the discus to soar through the air.
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Display the drawings on a bulletin board.
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