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Discuss with the children the material under Science Concept and
Teacher Text in this lesson. Make sure that each child has at least a
partial understanding of what is happening when they sit down on the
human chair in relationship to Newton's Third Law of Motion.
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Talk together with the children about cooperation in this experiment.
If everyone doesn't listen exactly to the directions that you give, the
experiment will not work.
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Proceed outside to a grassy area. Ask the children to stand in a
circle. Then on your command, everyone should sit down at exactly the
same time. If each person sits on the knees of the person behind them,
nobody will fall over. But it is important that everyone get up at the
same time. You can repeat the experiment with less children if you wish
to see the dynamic with a smaller number of people.
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Return to the class and discuss together what has happened in
relationship to Newton's Third Law of Motion. For the older students,
have them write a short paper on what they have experienced in this
experiment.
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