I grew up as a space junky, with NASA still running manned missions when I was a kid. It didn't take me very long to understand the concepts of gravity on the moon vs. earth. I trust that if I asked grade-school me, I'd get the right answer.

While it didn't take long to get the physics of the problem, it took a lot longer for me to grasp the social side of things. Specifically, if your grade six teacher says something stupid like this, there is absolutely nothing to be gained from correcting her. I wish I could go back in time and clue me in.

OTOH, if it's a university lab at a science and engineering school, then give 'em hell.