Trying out a new type of simulation-based pre-class assignment

I always had trouble picturing the ground state of the deBroglie model of the Hydrogen atom. Now I don’t!

At this past week’s Global Physics Department virtual meeting Noah Podolefsky spoke with us about PhET simulations. Noah’s best practice suggestion was to let students play around with a simulation for 5-10 minutes before asking them to do anything specific. And when you ask them to do something specific, to use open / investigative questions (e.g., “explore all things that affect pH”, as opposed to cookbook directions such as “set the acid concentration to 0.010 M…”).

I asked Noah

I’m wondering how you would suggest using these in pre-class (JiTT-style) assignments. If I am ultimately going to give them some sort of a question (could be nice and open like you suggest), I feel like most students will jump to try to answer the question without first doing the “free play”. Any suggestions on getting them to do “free play” first?

Noah suggested getting them to play around with the sim and generate 2-3 questions or screenshots of “cool things” that they found, which Brian Frank echoed by suggesting I do the same thing I did when I got my Quantum Mechanics class to generate questions based on a reading. Andy Rundquist also suggested I could get them to screencast their interesting discoveries (instead of just screencapping).

My Quantum Mechanics class is in the middle of developing the Hydrogen wavefunctions (I showed them the shooting method results for the angular wavefunctions last class, thanks Andy!).  We’re skipping our regular pre-class assignment this week, so I sent them a bonus pre-class assignment before we look at the Hydrogen spectrum on Monday. Here’s a slightly paraphrased version of what I asked them to do with the “Models of the Hydrogen Atom” PhET simulation:

Spend 5-10 minutes playing around with the simulation. Generate 3 items of interest — these could be any combination of questions that you have, interesting observations that you made or descriptions of things that the simulation made really clear to you that you didn’t quite get before. You can take screen captures, generate screencasts or just send me regular old text.

I’m really interested to see what they come up with. I will make sure to report back.  Just for fun, I have embedded the simulation below

Models of the Hydrogen Atom

Click to Run
Advertisements