On an A/B block schedule the end of the year gets here in a hurry. When there’s 20 school days left, that’s 10 blocks, of which 3 will be for review and a final exam. So like many of my fellow geometry teachers, I struggled with what topics to cover in a limited time (when my students have a limited interest in learning new, challenging material).
Hammer them with six sections of area of plane figures? Formula after formula? But what about surface area and volume? We’ve got to cover that, too, right? Seriously, all the formulas are on a sheet I’m going to give them for the final. Do I have to do every single shape? Can’t they just match up shapes and plug in numbers?
(No, that’s not a great approach obviously but lack of time forces a decision on the “least bad” option sometimes).
I finally settled on a power standards approach to area, and a project for the volume/surface area unit.
I (wisely, in retrospect) flipped area of sectors to a Friday and bumped area of a regular polygon back to a weekday. That turned out to be the section that zapped whatever will to learn (or engage) my students had left, which is pretty much what Tuesdays are for.
Anticipating that, I planned to have The Spiky Door Project make its triumphant return as a “learn by doing” Unit 11. The source material on the Kate Nowak blog is gone (RIP f(t)-dot-blogspot) but it lives on here and here. Because the #MTBoS is cool like that.
My most recent attempt at Spiky Door came during The Shutdown in April 2020. I counted it as a qualified success. This time around I teased it as a project that I would enter as a quiz grade. Since quizzes in my department are 70% of the overall grade, now I had their attention.
Hey, I’m not above bribery.
Across seven classes, 138 of my 200 rostered students attempted the project. That’s slightly less than would turn in a regular quiz, but I also noticed some of my kids who would make a half-hearted effort at a traditional quiz try a little bit harder with this project. I showed them the rubric and sold them on a decent quiz score in exchange for two days of basic human effort.
And I got some good work.
Those are good days. Hectic days. But days when it’s obvious to anyone with eyes that learning is happening. But now I need to sit down.
And then there’s that moment when the friendly competition starts.
And my fellow teachers making approving comments (“I love artsy-fartsy math projects” was my favorite) as they pass by is also a plus. And probably moved us a half-step closer to the day when the “final” is a project, not a test. I think everybody got what they wanted and needed out of this project. Just checking in for quick convos with my students, and looking over their work, I’m confident that Learning Has Occured.
So the big difference for Spiky Door 3.0 compared to the OG a decade ago and the Remote Version: I had them start by drawing the net when we were doing this project virtually. Lacking the ability to check in with each student, that seemed like the best way. What it did do was create a situation where students had a slant height and had to solve for height of the pyramid. It was less intuitive and led me to having to google “how to do inverse sin in google sheets” to set up my self-grading spreadsheet.
This time around we started with selecting a base length and a pyramid height, then solving for slant height, then drawing the net. Much easier for my kids to visualize. I was able to check in with each student, give them a visual on the slant height, and coach them through the Pythagorean Theorem if needed. Strongly encourage myself to take this approach when we do this project again next spring.
And if you don’t think my extra credit option next Amnesty Day is going to have something to do with the Luxor you don’t know me very well.
And, eyes wide open, any project I give the last 2-3 weeks of school is gonna take some time to grade. Plan accordingly. And give yourself grace. In week 35 or whatever of the school year sleep is a necessity, not a luxury.
So we closed the year on an up note. Kids learned surface area and volume. To the point where when a pyramid surface area problem showed up on my final exam review they all went “Hey! I know how to do this one!” I got cool door decorations. Sounds like time to bring this whole school year in for a landing. Please return your seat to its fully upright position.