Anyone have any movies with these themes:

everyone can make a difference.

treat others as you would like to be treated.

appearances can be deceiving.

Pay it forward. it is sad at the end, but it has all the elements you are looking for.

Explanation:

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.