Day 112: Coulomb’s Law, Spring Force Revisited, & Skew Dice

Today was our first day back from spring break and the first day of a new trimester.

AP Physics 1: Coulomb’s Law

I am a part of the Pivot Interactive’s Chemistry Fellows program.

We dove right in with a lab on Pivot Interactives to discover Coulomb’s Law. We’re going to be cutting it pretty close on squeezing everything in before the AP exam, so I was much more direct than usual about what needed to be done by the end of the hour and how long I expected tasks to take, and that seemed to help students meet the timeline I had in mind. I need to make that a habit for the next few weeks.

pivot coulomb.PNG

Physics: Spring Force Revisited

We’re getting ready to start vibrating springs, so today we revisited Hooke’s Law. I asked students to make some predictions about how the slope of two different springs should compare before collecting any data, which was tricky since they haven’t thought about what the spring constant actually means for a while, but I think they got where I want them to be.

Chemistry Essentials: Skew Dice

A lot of my students either haven’t had chemistry since trimester 1 or came to me from the other Chemistry Essentials teacher, so I treated today like the first day of school and tried to set a tone for the term. I tasked students with writing a CER to answer whether skew dice are fair. In the past with this activity, I’ve had some trouble convincing students they need a lot of data, so I started by asking students to collect evidence that a regular dice is fair before we got out the skew dice, and students pretty easily recognized they needed a lot of rolls with the regular dice to get a distribution that makes sense.

skew dice.jpg

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