Day 122: Universal Gravitation, Pendulums, & Formula Mass

Today was our first day back from spring break! We have kind of an odd start to the week since tomorrow freshmen and seniors have an off-campus learning day to accommodate state testing for sophomores and juniors.

AP Physics: Universal Gravitation

Students worked on an activity Lucas Walker presented at AAPT last summer using exoplanet data to find a relationship between centripetal acceleration and orbital radius. I was nervous about having students calculate the orbital velocity and acceleration in a spreadsheet since most of my students don’t have much experience with spreadsheets, but my students were very willing to dive in using the resources I provided and were very successful with the calculations.

Physics: Pendulums

Students collected data to model the impact of weight, drop angle, and mass on the period of a pendulum. I’m continuing to see students much more confident in their physics abilities than even the end of last trimester, and working more independently as a result.


Using the environment to make measuring release angle easier

Chemistry Essentials: Formula Mass

Students started making sense of formula mass by predicting the mass of various combinations of nuts, bolts, and washers. I wanted to give them something pretty concrete they could test directly in the lab before diving into true stoichiometry. When we shifted to chemical formulas at the end of the hour, a few students got tripped up if they skipped the particle diagram, but the math was pretty obvious to everyone once they got that step.

molar mass lab.jpg


4 thoughts on “Day 122: Universal Gravitation, Pendulums, & Formula Mass

  1. Pingback: Day 123: Universal Gravitation, Pendulums, & State Testing | stoeckel180

  2. Pingback: Day 126: Universal Gravitation, Pendulums, & Quiz | stoeckel180

  3. Pingback: Day 127: Levers, Springs, & Balancing | stoeckel180

  4. Pingback: Day 128: Whiteboarding, Springs, & Stoich | stoeckel180

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