Originally Posted by appleblossom
I have another question for the group, about explaining scientific concepts. A common thing here is that he will hear something like "friction" and seize on it, and ask for information. I do my best to explain, but I often feel like, because his language use is so far ahead of the rest of his development, I can't be sure that I'm actually helping him understand anything - or if he's just parroting phrases.

If he seems satisfied with the answer, then I wouldn't worry about it too much. He'll have plenty of opportunities to get a deep understanding of friction (or whatever else he happens to be asking about) later.