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Discuss with the children how the Three Laws of Motion discovered by
Newton are in use everyday. Have the children understand how the Second
Law of Motion is in use with the rocket launcher.
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Allow each student an opportunity to do this experiment. Talk about
safety - that when they blow on the straw to start the rocket launcher in
motion that they point it away from everybody.
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To make the rocket launcher do the following steps: Cut the wide
straw so it is 2 inches shorter than the narrow one.
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Staple one end of the wide straw several times and seal this end with
sticky tape to make it airtight.
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Snip just enough off the tip of the paper cone so that the wide straw
will fit through snugly. Tape the tip of the cone to the straw.
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Insert the narrow straw into the wide straw. Hold the narrow straw
to your lips at a 45 degree angle to the ground and blow into it.
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After each child has had an opportunity to do this experiment have a
short follow-up discussion.
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