Day 3: Board Meeting, Lab Template, & Burning Steel Wool

AP Physics: Board Meeting

We did the first real board meeting using yesterday’s results from the buggy lab. Once again, I borrowed Casey Rutherford’s Observations, Claims, & Evidence structure. Some of the chemistry teachers have been integrating techniques from Modeling Instruction, and I got to reap rewards in a really good first board meeting. There was some discussion about whether some intercepts were small enough to call zero, which, along with a whiteboad where students plotted multiple trials, lead really nicely into an introduction to uncertainty. Next year, I think that would go even smoother if I push all groups to truly make time the independent variable and complete multiple trials.

Physics: Lab Template

For the second round of the dowel lab, I had students follow the lab template we’ll be using this year. I also changed the guiding question to “What is the relationship between the mass and volume of these dowels?” since that more naturally motivates measuring multiple dowels and is closer to the kind of guiding questions we’ll have on future labs.

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Chemistry Essentials: Burning Steel Wool

We wrapped up yesterday’s lab by making a post-it histogram of the results students got yesterday, then had some discussion on the significance of those results. Afterward, we continued the mass and change sequence from Modeling Instruction by measuring changes in mass as steel wool burned.

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Day 2: Buggies Redux, Dowels, & Coffee Can

AP Physics 1: Buggies Redux

Today we repeated the buggy lab, but with a focus on preparing whiteboards that would make a meaningful comparison across groups. I had each group collect data for a standard buggy moving forward from zero and one other variation. One thing I’m really excited about is several groups played with ways to represent multiple trials on a single graph and one group came up with Frank Noschese’s effortless error bars on their own, which will be a great introduction to uncertainty.

Physics: Dowels

This class is also doing two rounds of the first real lab. Today, I asked students to use a bunch of small dowels to collect data that would let them predict the mass of a much larger dowel made out of the same type of wood and represent their data on a whiteboard. The majority of groups used proportions, which was great, but very few measured multiple small dowels on their own and no one thought to try a graph. In most labs, I ask students to find a relationship, and I wonder if that would be a more interesting prompt here.

Chemistry Essentials: Coffee Can

We did the exploding coffee can demo to introduce particle diagrams. I had a few students who were really willing to propose ideas to explain the changes in the can’s behavior as the flame burned, which was awesome.

coffee can

Day 1: Buggies, Broken Circles, & Mystery Tubes

AP Physics 1: Buggies

I took a page from Frank Noschese and embraced the idea that “Any lab worth doing is worth doing twice.” I gave groups the very vague directive to collect data on the buggy’s motion, then represent it on a whiteboard and turned them loose. My students seemed very comfortable with the ambiguity and dove right in, which was fantastic. I had a good mix of data tables and graphs on whiteboards, along with a lot of variations on graphs, which led to some good conversation on what would make it easier for us to compare results. Tomorrow, we’ll re-do the lab with a focus on being able to compare results. I talked more than I’d like today, but that’s pretty typical of when I do a new discussion.

buggy

Physics: Broken Circles

To start building class culture and learning how to collaborate, I started today with Frank Noschese’s subversive lab groups. Once they were in groups, students did the broken circles activity from Designing Groupwork: Strategies for the Heterogeneous ClassroomEach student got an envelope with pieces of a circle inside. As a group, they had to assemble four complete circles without talking. Afterward, we had some discussion about what skills groups needed to complete the task.

broken circles

Chemistry Essentials: Mystery Tubes

Today was also about class culture in chemistry. This class also started with subversive lab grouping, but  I stepped in more than I did in physics. There were more students in this class who seemed nervous about approaching their peers and it was tougher for them to identify other possible solutions when a group got too big. Afterward, we got out the mystery tubes. I could tell I didn’t make the goal as clear as I sometimes do; while there were a lot of groups who were very engaged and had great conversations, others had trouble getting started.

mystery tube

Day 166: Year-End Reflections

Tomorrow is our last day of school, but, with our finals schedule, I don’t have any students today, so its a good time for me to look back on the school year.

AP Physics

Overall, I’m very happy with how this year went. I felt more confident my second time through the AP curriculum and my students came into the course eager for lots of collaboration, discourse, and reasoning.

One of the big changes I made this year was starting with momentum. In terms of conceptual development, I liked how that worked out and enough of my students took calculus last year that students were able to implicitly make sense of constant velocity. However, the first labs I did were a tough starting point. The bowling balls and mallets were a fun way to start the course, but coming up with a rule or pattern at the end was a bigger intellectual risk that most students were ready for on day 1 before I’d done much culture setting. The first quantitative lab was on impulse and had lots of little details going on that made it very challenging when students were also getting one of their first experiences designing physics experiments. Next year, I think I’m going to start with a brief constant velocity unit where I can set the class culture and start working on science practices when the content is relatively easy.

This summer, I want to spend some time rethinking how I approach lab write-ups. Write-ups were officially due a few days after the board meeting for a lab, but I have some philosophical objections to deducting points for late work, so I ended up getting almost all of the lab write-ups the last week of the trimester, which has not been an issue in my classes in the past. I think in the past, doing the write-up helped students finish the sense-making process, but this year, students took to board meetings very quickly, so there was less intellectual work left for them to do on the write-up. On a survey I gave this spring, one student put it well when they said the lab write-ups “feel more like an assignment than a learning tool.” Abandoning lab write-ups isn’t a great option; my school mandates at formative category in the gradebook that the labs work well in and a few colleges in the area request lab portfolios before granting AP credit. I don’t have any bright ideas yet, but I want to think about ways to make lab portfolio more of a learning tool.

Physics

The other physics teacher and I got a lot of feedback that students felt like they had a good experience in the course, but we both struggled to get our students to move away from dependent learning patterns. We’re talking about how to better scaffold skills and habits next year, including working on a template we can give to students for model-building labs. I also started to get better whole-class discussions this year when I was very conscious about the time I gave students to pre-talk with their groups. I found I needed to have students move to their lab tables and write ideas down to get the best results; it took me a good chunk of the year to figure that out, so next year I want to start that form of pre-talk with the very first board meeting.

This year I had more students switch teachers at trimester than in the past with this course, which drove home how much I rely on long-term results, ranging from big things like class culture and quality discourse, down to the smaller nuts and bolts, like submitting a meaningful retake request. For some pieces, like requesting a retake, there are relatively easy fixes; the other physics teacher and I have agreed on a procedure for next year that’s a hybrid of what we’ve each been doing. For the bigger issues, like building a strong class culture and teaching students how to talk and write about physics, its going to be a lot tougher. The other physics teacher and I are going to start PLC-ing together again next year to give ourselves some space to dig into these issues.

Chemistry Essentials

This year was the first time I taught the first half of the course, so it was rough. The existing curriculum is heavily influenced by our textbook and approaches a lot of topics as very discrete ideas. This summer, I want to spend some time working on weaving a more meaningful storyline for the course. I also want to do a better job of embedding Modeling Instruction into the course, which I think will help with the storyline in addition to the other benefits of the Modeling approach.

My other big source of frustration was grading. This was the only course where I was not using standards-based grading, and I consistently felt like my students did not have as clear an idea of where they are at or what they need to work on as I’d like them to. I also found many students improved on skills that appear throughout the course, like balancing reactions or finding molar mass, but was frustrated the grading system did not have an avenue for me to acknowledge their growth. The other Chemistry Essentials teacher is excited about the idea, so its time to take the plunge.

Looking ahead to next year, most of my sections will be co-taught with a special education teacher. There’s some question about who I will be co-teaching with, but it will most likely be someone with a limited science background. I’m starting to think about how to introduce whoever my partner is to my vision and goals for the course. I am excited to collaborate with someone much more knowledgeable than I am about special education; typically, about half of the students in the course qualify for special education and many other students have other significant needs, so the skills many special education teachers have with adapting and scaffolding curriculum could add a lot to the course.

Day 163: Presentations, Lab Practical Exam, & Quiz

We let seniors go a week early, so today was the last day for seniors.

AP Physics: Presentations

We finished presentations of the final projects students have been working on. There were a lot of great projects; two students analyzed a launcher for balsa wood planes they built in an industrial tech class.

Physics: Lab Practical Exam

Students took the lab portion of their final exam today. There were three different problems that each connected to one of the problems on the written exam. My 5th hour finished in about half the time I expected, probably because it was the second to last period of their last day, so I broke out the mystery tubes.

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Chemistry Essentials: Quiz

Students took a quiz on reaction rates and energy in chemical reactions. Things got a little tricky; we dismissed seniors about 20 minutes before the end of the school day today, and about one third of my class is seniors, so I needed to make sure the assessment could be finished by then. I didn’t prepare very well for what the juniors would do with the rest of the time, so things got a little chaotic.

Day 162: Presentations, Final Exam, & Superintendent Visit

AP Physics: Presentations

Students presented their work on the final project to their class. There were a lot of great projects. There were some great reactions to a student who used video analysis to determine how much lift her chickens could produce (spoiler: it isn’t much).

Physics: Final Exam

Students took the individual portion of their final exam today. Like previous trimesters this year, we are doing a fairly traditional written exam and a lab-based exam in groups. Since we don’t have a special schedule for senior finals, it was very natural to do the individual part today and the group part tomorrow.

Chemistry Essentials: Superintendent Visit

I got asked to have my students participate in a world cafe with our superintendent today, so we skipped doing chemistry. For the past three years or so, our district has done a lot of work related to a strategic plan and our superintendent has been very intentional about including students throughout the process. This work is especially important as we take steps to respond positively and productively to a letter from the Minnesota Department of Human Rights about discipline disparities and my Chemistry Essentials class was a perfect group to include since students who are under-served in our district tend to be over-represented in this course.

Day 161: Project Work & Whiteboarding

There was some extra chaos today and I dropped the ball on getting photos.

AP Physics: Project Work

Students worked on wrapping up their final projects. A lot of them are getting excited about presenting tomorrow. There are several students who had very ambitious proposals that I encouraged to scale back their project who have ended sticking with their original plan because they are enjoying the project, which is awesome. One student worked out the force on his legs at several key points during a hurdle race, along with trying to find the optimal launch speed for jumping over a hurdle.

Physics: Review Whiteboarding

Students did some more whiteboarding to review for tomorrow’s final. When sketching diagrams for a spring, a lot of groups had trouble with which direction the spring force was acting.

Chemistry Essentials: Whiteboarding

Students whiteboarded yesterday’s problems. The two hours before this class, there had been some excitement related to senior pranks, so the students were much more keyed up than usual and it was tough for them to stay focused. I also found students were having trouble keeping track of  a lot of the details on the bar charts, which isn’t surprising given how quickly we’ve been moving through this content.

Day 160: Graphite Wire, Pendulum Review, & Energy Bar Charts

Today was the start of seniors’ last week of school.

AP Physics: Graphite Wire

Students continued to work on their final projects. One student used a graphite pencil to sketch “wires” on a sheet of paper and worked on collecting data on the potential difference at the LED. I wasn’t sure if a pencil would leave a thick enough layer of graphite, so got pretty excited when she got this to work.

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Its hard to see, but the LED is glowing!

Physics: Pendulum Review

With the final exam starting on Thursday, we took some time today to start reviewing. I started with some pendulum questions that I expected to be pretty quick and easy, but it took a lot longer than I hoped. I didn’t do as nice a job of spiraling as I would have liked this spring, so students were very rusty on some of the concepts they needed.

 

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Chemistry Essentials: Energy Bar Charts

Students worked on energy bar charts for chemical reactions. The hardest part for a lot of students was parsing what exactly was happening at each snapshot for the energy bar carts; in general, I haven’t pushed the idea that some representations are like a photo that shows a specific instant while others are like a movie that shows change over an extended period, which would have helped today.

Day 159: AP Test Day, Retakes, & Equilibrium

AP Physics: AP Test Day

About two thirds of my students took the AP Physics 1 exam today, so my classes were smaller than usual. I gave them time on to work on their final projects and I cleaned up some lab equipment. I had a broken tumble buggy in my room that a student asked if he could take apart, and ended up getting it running again.

Physics: Retakes

Today was also the unofficial senior skip day, so my physics classes were pretty small, too. I gave students the opportunity to retake assessments in class today, though no one took me up on it. In one of my classes, I’d tried lighting a fire with a convex lens yesterday, but it was too cloudy, so we took advantage of today’s sunnier weather to get some more success.

Chemistry Essentials: Equilibrium

My chemistry class is only about one third seniors, so I actually got to do some teaching today! We did a lab with a reaction between iron nitrate and potassium thiocyanate to see what happened with various changes to shift the reaction equilibrium.

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Day 158: Multiple Choice, Concave Lenses, & Energy in Reactions

AP Physics: Multiple Choice

I used Plickers to go through some practice multiple choice with student who will be taking the AP Physics 1 exam tomorrow. The conversations were less animated and less focused than earlier in the year, but that’s not a surprise right now. A lot of courses have wound down at this point, and its been tough for students to split their focus between the final project and reviewing for the exam.

I also found myself wishing I’d shifted the due dates for the final project proposal and qualitative description to earlier to give students a little more in-class time to work on their data collection.

plicker

Physics: Concave Lenses

Since yesterday’s ray diagrams were mostly convex lenses, we did a little qualitative work with concave lenses today. After talking about what students saw on a screen in Monday’s lab when they used a concave lens, I asked students to sketch a ray diagram that would explain their observations and was pretty pleased with the results.

Maker:S,Date:2017-10-21,Ver:6,Lens:Kan03,Act:Lar02,E-Y

Chemistry Essentials: Energy in Reactions

Students worked on a worksheet to work with the idea of energy in chemical reactions, especially for exothermic and endothermic reactions and factors that affect reaction rate. I like that focusing on energy gives a why for a lot of observations students have made so far this year; I want to spend some time this summer making energy a much stronger theme in the curriculum for this course.