When energy moves, the thing it comes from is the giver, and the thing it goes to is the receiver.

The moving air is the giver, so energy comes in with the moving air.

The pinwheel is taped to its straw, so the straw turns with the wheel.

The turning straw is the receiver, so energy goes out with the turning straw.

The pinwheel: energy comes in with the moving air, and goes out with the turning straw.

Now let's look at the fan, plugged in and blowing air.

Energy comes in with electricity, along the cord. Energy goes out with the moving air.

The blades stay inside the fan, and the moving air leaves it.

The fan: energy comes in with electricity, and goes out with the moving air.

The fan is the pinwheel the other way round.

The flashlight's bulb shines.

Energy comes in with electricity, from the battery inside. Energy goes out with the light.

The flashlight's bulb: energy comes in with electricity, and goes out with the light.