Physics & Physical Science Demos, Labs, & Projects for High School Teachers

Archive for January 2013

year in review 2012It’s been a pretty mundane year.  No drama, no great leaps, no alien invasion or Mayan apocalypse, pretty much the same stuff, new year.

Hey, this would be a good time to assess the pro’s and con’s of standards-based grading (SBG) in my physics and calculus classes.

The Good

My spreadsheets are working great.  It may seem like a small thing, but it isn’t.  A well designed spreadsheet is the key to keeping SBG running smoothly.

It’s nice to have a bank of questions and quizzes at the ready.  My first year of SBG was non-stop quiz creation.  Now I need to make maybe one or two new physics questions a week.  I probably have 300 individual physics questions divided among the C, B, and A-level quizzes.  The hard work is done, weekly quizzes cause me no stress at all.

The kids all love standards-based grading.  One of my students told me she couldn’t imagine taking calculus using a traditional grading system.  The kids are all on board.

The Meh

Probably the biggest problem with SBG is determining who is in danger of failing at the interim report.  Half way through the quarter, the class average is in the 50’s or 60’s.  One of my students emailed me over Christmas break asking me to call her mom.  She is an A student, but her 60 average at the interim was going to get her grounded for the break.  This is after I sent home letters at the start of the year and at the interim explaining why the averages are low.  The kids who plan on failing just don’t come in to take quizzes or get help.

I’ve noticed that the lack of testing pressure has caused the kids to put off studying for the weekly quizzes.  Now they look over the problems right before class.  It’s hard to determine if this would be any different with traditional grading; this year’s class is academically quite lazy.  They have been warned, there is no curve.  They can all get A’s and they can all get F’s.  Amazingly, it will be a normal distribution curve.

What’s Next

I’ve been thinking about what changes I would like to make.  I’m considering a small change to the calculus grading system.  Right now it takes two correct problems to master a concept.  The first perfect quiz gives them 40/50 points.  The second moves that to 50/50.  I’m thinking of scoring the second 45/50 and the third 50/50.  My concern is that they are earning the label of “mastery” before they really get there.  On the other hand, the kids probably understand the material so much better than they would through traditional grading.  Any thoughts?

One little thing I would like to do is color code the physics quizzes.  I’d like to copy all the C-level quizzes onto a pale yellow or pink paper.  Maybe a light blue for the B-level, and leave the A-level quizzes white.  The colors would give the student and me a quick visual check of everyone’s progress.

Considering SBG?

If you are, I am willing to share everything I’ve created; my spreadsheets, quizzes, experiences and ideas.  Just ask.


What’s New in 2013/2014?

Every year brings a change, this one is no exception.

I will be picking up the sophomore honors Algebra II class to keep them separate from the juniors. This should help accelerate them and put them on a stronger track towards Calculus. Looks like there will be only one section each of Physics and Calculus, but still two of Robotics & Engineering.

Hot topics this year are going to be the Common-Core Standards, Standards-Based Grading (SBG), improving AP Calculus scores, and somehow adding Python, maybe as a club.

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