Days 35-37: Lab Practicals

The Minnesota teacher union has our convention on this week, so we only had school Monday through Wednesday. I think staff and students alike are feeling pretty run down, so this is good timing for everyone to take a break.

Physics: CAPM Practical

This week, students worked on the “catch the loot” lab practical for constant acceleration. After how smoothly paper and pencil problems went last week, I expected the practical to go very smoothly, but students really struggled. I also found a lot of groups were not interested in testing their calculation with the materials. I think I underestimated how difficult it is for my students to draw connections between what happens in the lab and what happens on paper. I teach all of my physics sections in the morning, so when my colleague who teaches physics in the afternoon saw how challenging the practical was, he added a brief whiteboarding activity to help bridge the paper and pencil problems to the practical, which seemed to really help his classes. Going forward, I need to make sure I plan how I will help students make better connections between what happens in the lab and what happens on paper.

Students also had their quiz over constant acceleration calculations this week and many of my students were really worried after having their confidence shaken by the lab practical. On the quiz day, I took the first half of the class to have students whiteboard a word problem, which they were able to nail with minimal help from me and seemed to really improve the tone of the class before the quiz. I shared my reasoning for doing that problem, and a student made sure to tell me how much she appreciated that I am paying attention to where they are at and trying to adjust to what they need, which was a good reminder that talking about my reasoning for instructional decisions can do a lot to help students feel less frustrated in my classroom.

AP Physics 1: Balanced Forces Lab Practical

Students did a lot of practice with applying math to vector addition diagrams, including a lab practical to find an unknown mass. My students were quick to recognize the math that would be useful, but weren’t always comfortable with how to use the math. I really appreciated the small class size I have in AP since I think that has helped the class feel more cohesive, which has meant students are very comfortable asking each other for help and very willing to patiently work with their peers when asked for help. The small class size has also made it easier for me to step in before students start to experience any serious frustration and has helped me build trust with my students that I will be able to coach them through things if needed. Knowing the positive impact the strong relationships students have with each other and have with me, I need to keep thinking about how I can do a better job of building relationships in my much larger physics classes.

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