Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
.... students taught by a momentum flow approach have little....
difficulty with Newton's third law, which is a stark
contrast to typical instruction. Less difficulty with the
third law is because the law is reframed to a fair
triviality by momentum flow: If momentum is flowing from one
object to another, the amount of momentum lost by one object
is the negative of the momentum gained by the other; one's
loss is the other's gain.
Momentum flow works because students have relevant
intuitions about flow that can be built on, a prototypical
genetic epistemological consideration. Momentum flow seems
so odd to those who were taught the usual approach to force
and motion because they simply have not built on those
intuitions, and they cannot easily manage thinking in terms
of flow.