Physics Education, in a Bit More than a Minute

MinutePhysics, an extremely popular YouTube channel that explains physics topics (though typically in a bit more than a minute), posted an “open letter to President Obama” about reforming high school physics.  Here’s the video, and my thoughts are below.

I actually have conflicting feelings about this. First, I would point out we do cover some of that, but not in physics. In my district, the Big Bang and astronomy were covered in an “integrated science” class on Earth and space science and some basic physics. And for some weird historical reason, we’ve decided that atomic structure is a chemistry topic until you get to college (I calculated the energy of nuclear mass defects in my first high school chemistry class, and that is straight-up E=mc^2) while high school physics is just elementary mechanics and E&M, probably out of some combination of bureaucratic inertia and a view of what was considered “practical” when these curricula were standardized. 

I honestly think the way we teach physics and chemistry in high school now prevents us from adequately covering modern physics. Quantum mechanics doesn’t really have any conceptual overlap with mechanics at this basic level and so it’s hard to integrate into the physics curriculum. This is also the view of some of advocates of a so called “Physics First” curriculum; the standard curricular divisions of high school biology, chemistry, and physics don’t really make sense given the way modern science works. One group advocated just really trying to integrate all three subjects and just have a three-year science sequence that isn’t separated as much by field. That would help remove any potential turf war between what parts of atoms are physics or chemistry and what biochemistry is biology or chemistry.

As an aside, relativity actually seems like it would be doable in high school. Or at least the only bit we cover in undergrad physics.  The Lorentz transformation is just algebra, and honestly that’s enough to help you understand a lot of its relevance to life (GPS correction, length contraction, etc). If I could propose one dramatic change to how we approach high school physics, I would honestly be okay with less emphasis on modern physics and more on just the general idea of energy. Physics (and really all of nature) is about minimizing energy.

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