Possible goals
	• We could teach the isolated fact: “the tilt of the earth’s axis is responsible for the change of seasons.” • We could teach that science is about the construction of models that coherently and consistently explain many facts (such as the fact that when it is summer in the northern hemisphere it is winter in the southern). • We could teach that science is a refinement of everyday experience and get them to think about the implications of short winter and long summer days.