Day 3: What does a negative acceleration mean?

We didn’t answer that question today, but we asked it a lot. Almost everyone in the class has really wondered that on their own by now. One student has proposed that it has to do with the direction of the forces, but that didn’t get much traction (yet). We will come back to that question and idea soon enough. We worked through their findings from … Continue reading Day 3: What does a negative acceleration mean?

Day 11: Enthusiastic Arguments in Relativity

In Relativity, we continued with our relative motion questions (via Preconceptions in Mechanics). We’ve been using Plickers, which the kids really adore (and which I feel ambivalent about—the tech is really nice and works easily and quickly; I don’t like that it forces everyone to the same pace). In any case, the discussions have been… animated. You can get just a tiny sense of things … Continue reading Day 11: Enthusiastic Arguments in Relativity