System snow with some lake effect on top over the weekend led my district to call for an e-learning day on Monday. It was the right call but it definitely led to some planning challenges. Losing an in-person Red Day meant we were left with a Grey Day singleton on our A/B block schedule. What to do? Ahhh yes. Been waiting for just the right moment to drop three-act math on my geometry students. Today’s the day.
I made a snow day activity in Desmos last year during remote learning based on the “That’s a Ton Of Snow” activity by Denis Sheeran and using a template created by Suzie Craig.
I’m trying to make sure I walk my talk. I’ve been telling my students there is more to math than worksheets, that I want them wrestling with problems that don’t have an obvious answer, that are not google-able or photomath-able. We think in here. So let’s go.
I tried this as a remote activity last year and honestly it was kind of a dud. We did synchronous learning Monday through Thursday with e-learning Fridays, and as the year wore on our kids started to see the e-work as “optional”. This activity probably didn’t get the engagement it deserved. But I resurrected this year for an in-person day, and I’m glad I did.
I used a photo of my driveway after a snowstorm last year, piles of snow on either side, as my hook. Craig’s template starts with a Notice and Wonder, then students developing a mathematical question. Just that one word generated a mountain of how many/how much/how deep/how long questions. Bullseye!
I guided them to “How much did all that snow weigh? Did Mr. Dull shovel a ton of snow?”
So then it’s time to set guardrails. Students made their Too Low/Too High estimates followed by a “Game Show Guess” (“if you were on a game show with a suitcase full of cash sitting there, and you’d walk away with the money if you could guess the number within, say, 10 on either side, what would you say?”)
Weight is not our usual method of measuring snowfall, and a lot of my kids were definitely hung up on inches. They needed a little nudge.
But when I asked “What other information do you need to figure it out?”, they nailed it. Dimensions of the driveway, depth of snow.
Here you go kids, have at it. Also: conversions are a killer. Eight inches of snow when the driveway dimensions came in feet tripped up almost everyone.
We had a little time for a side conversation on geometry vs algebra. My mentor teacher back in the day pointed out that for high school kids usually one or the other makes sense but probably not both. Meaning: Kids are linear thinkers or spatial thinkers. I didn’t really understand that then. But now, after teaching for a million years and after teaching both, it was like he was looking into my future with that statement.
And my kids definitely got that – when I asked them the biggest difference between the two classes they said “we talk way more about shapes in here.”
Eventually we worked to an answer and they were stunned to find out I moved about 2.5 tons of snow off my driveway. My kids kind of limped to the finish. There was a lot of verbal engagement, which was good. They were into it. But not all of them crunched the numbers to get the math payoff. Ideal perfect world, I want them to be able to do both.
The extension was pure gold though – When this storm hit last year my son’s football coach cancelled their weight workout and asked them to shovel out neighbors instead.
Yeah I know the Pittsburgh guy went viral last week for sending his kids into their neighborhoods to shovel instead of lifting, but let the record show Bill Marshall was on it too.
Denis Sheeran talks about bringing your students’ interests in to class as a hook. And when we started talking getting paid to shovel, they were right back in the game. Almost all of them have shoveled snow, and through the years a lot of my Gavit kids would go door-to-door in the neighborhood on a snow day offering to shovel out neighbors. Made some good pocket cash for a morning’s work. This is the beauty of a good three-act task: you don’t need any special math knowledge to engage with it. Common sense your way in. Low barrier to entry. Then when the kids are invested we can lay the math over the top of it.
So how much is my driveway and two and half tons of snow worth?
The bidding war was on. I’d pay $40 for sure. At least. And make hot chocolate after. I felt this weekend’s shoveling effort in my arms and shoulders Sunday. But also, I am an old.
All told it was a good day in Rm 247. Today was a gentle reminder to me that there’s still room for Three-Act Math and “ripped-from-their-world” stuff in my classroom. And there always will be.
I just got to make sure it doesn’t take another snow day for me to roll it out.