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WHY?
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Seeds have additional membranes (thin piece of skin) that act
like wings. These membranes increase the surface area of the
seed, thus giving it more resistance to the air and causing it
to float down.
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ASSESSMENT: Can the student communicate
what they observed?
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Student is able to communicate that the helicopter spins
around as it drops because of its shape and design.
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Student is able to communicate that the helicopter spins
like a real helicopter.
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Student is able to communicate that the helicopter spins
as it drops.
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Student says nothing more than it dropped or fell to the
ground.
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Last modified: Sun Aug 10 18:00:59 PDT 1997
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