Key Ideas
~Energy moves from one object to another.
~Forces are interactions between objects.
~When two objects interact the forces are equal in intensity and opposite in direction.
~Total (net) force is in the same direction as delta v (change in velocity).
Lingering Questions
~If the forces are equal and opposite, why does something move?
~Is the "point of contact" a force feature?
~How can we relate friction, normal, gravitational force lesson to 4th & 5th graders?
~What about passive forces? What about forces exerted on an object that is not moving?
~What decisions do facilitators (or you as teachers) make to guide how students explore / enact an energy scenario?
~What about heat from the sun? Does heat from the sun transfer to the Earth? Consider the following scenarios:
Sun --> Earth and campfire --> marshmallows. How are these scenarios similar? How are they different?
~If energy is transferred from one object to another, what is the object/carrier for light energy?
~Can force be applied without energy being transferred?
~What is the deal with equilibrium (re: force)?