You should probably include some analogies for the light wave graph, if not for all of your “lessons”.

E.g, “where the strength of a particle varies with distance and shows other wave properties,” kind of like how uncontrollable or varied it is the amount of force acted while you are running. Left leg could stomp hard, while the right leg use much less than that, and moves on like a cycle. The reverse could also happen “, but just hang with me for the sake of example.”

There. I know there is a flaw somewhere, though…