Timeline with summary of my posts

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Timeline of my posts

2026
Aug 17

Setting up a buggy lab track

For the constant velocity buggy lab, I’m lucky enough to have a pathway behind our physics rooms that is locked off to the general student community. When we run the buggy lab, students work back here. Last year I had papers taped in various places to help students determine their…Read More

Aug 13

Making your slow buggy go slow

photo showing a foam block with foil adn a battery placed in a buggy.

A unique way to replace one of the batteries in a physics constant velocity buggy lab.

Mar 23

Waves in a Spring: A Lab That Helps Students Figure Out What Really Controls Wave Speed

This lab engages students in an evidence‑based investigation of what determines wave speed in a spring, emphasizing experimental control and quantitative reasoning. By systematically varying amplitude, tension, distance traveled, and wave type, students test common misconceptions and use measured data to decide which variables meaningfully affect wave speed. The activity…Read More

Mar 23

Waves in a Spring: Teacher supplements as generated by Copilot AI.

Main post can be found here I had Copilot generate a quick key, list of common misconceptions, and CA NGSS alignment. I did a quick scan, and it looks pretty good, but use at your own risk. 1) Teacher Key / Expected Trends (by experiment) Context from the lab: Students…Read More

2025
May 14

Calorimetry: Measuring energy in foods.

Photo of an aluminum can held above a sheet of aluminum foil by a ringstand. A digital scale is also visible.

Many chemistry teachers lead a lab in which students burn food and capture much of the energy in water in an aluminum can. Since so much of the energy is not absorbed by the water in the can (so much just passes around the can and rises into the classroom),…Read More

2023
Oct 16

The importance of the non-breaking space in science writing

screenshot showing how non-breaking spaces keep numbers and units together

As a science teacher, I write a lot of documents that have numbers with units (e.g. 3.6 m/s). When readers see a number at the end of a line without units immediately following them, it is harder for them to keep the numbers and units. The 50 second video below shows the…Read More

Sep 27

Average vs trends: “Who should pack your parachute?”

This question focuses on the traditional grading system were all scores count the same, and a students' final grade is based on the average of all the scores. The alternative presented is to look at trends in a student's scores…looking for growth and allowing for early mistakes/low scores to not…Read More

Feb 04

Ionic bonding pies

an image showing a yellow inner circle with six yellow slices around it and another pie with Mg in the middle and two red slices.

Here’s a great ionic bonding activity shared on the National Chemistry Teachers Facebook page. Students are exposed to valance electrons and matching for 1:1 ionic compounds. Two sizes are provided: One full page pies, and one with six pies on a page. Here is the PDF template.

Jan 20

Yolo Bypass flooding-January 2023

I’ve collecting photos of the Yolo Bypass during the January 2023 flooding. Photo location is at the east end of the bypass, on the north side along the bike path. I’ll be adding more photos as I take them over the next few weeks. Looking westbound from West Sacramento Click…Read More

2021
Oct 13

Introducing forces using bowling balls & brooms

n Modeling Instruction lessons, most units start with a 'paradigm lab' that initiates development of a conceptual model for the unit ('concepts before math'). When introducing forces, the model presented here develops the relationship between 'pushes' and changes in motion. This post explains the procedures and pedagogical rationale for this…Read More