We’re about to begin the Reasoning and Proof unit in geometry, and judging by the looks on the faces of some of my students when I introduced it Wednesday and Thursday, well, its reputation certainly precedes it.
Our curriculum map skips over logic statements and inductive reasoning, but back in the day I started doing a little writing activity as an application of the Law of Syllogism and it still holds up pretty well, and allows us to ease into a challenging subject.
I’ve been fortunate that my schedule has varied from year to year, toggling back and forth between Algebra II and Geometry the last 7 years or so. It keeps things fresh. I’m a believer in “teach 20 years but don’t teach one year 20 times”. But I also subscribe to the theory that in this business you keep what works and throw out the rest.
Thus, the If You Give a Mouse a Cookie project made its grand reappearance in Room 247.
(After an online convo this week I realized I hadn’t written about this one yet, so here we go. Take it and make it awesome-er if you want).
Student handout here. When I resurrected this activity after a long layoff teaching Algebra 1 and engineering, I couldn’t find the doc I had made back in 20-oh-whatever. A quick search online turned up this one, which I edited for my purposes. I don’t know who originally made it tho, so if it’s you, thanks.
We start the day with a video bellringer:
In a Google form I ask students to write down two “if-then” statements they heard in the story.
Then we talk about “cause and effect” – what happens if you stay up late binge watching a show? You are tired in the morning. What happens when you are tired in the morning? You hit snooze on your alarm. What happens if you hit snooze on your alarm? You wake up late. What happens if you wake up late? You miss the bus. And so forth.
All my kids can relate. In one class a student interjected, “so, you mean a chain of events?” Exactly. Let’s go.
The assignment is to write a story in the style of If You Give A Mouse A Cookie. Eight linked if-then statements that tell a cohesive, school-appropriate story, with a title/author/cover illustration.
Stick figures are definitely allowed.
My handout provides a lot of scaffolding – separate boxes for each of the eight sentences and then one more for the end where they link the hypothesis of the first sentence to the conclusion of the last, sometimes to great comedic effect. I make it a small quiz grade (15 points) because this unit does kind of grind up kids on the actual proofs quiz, and IYGAMAC serves as balance grade-wise. Plus, just about everyone can pinpoint that cascade of interrelated events in their own lives and the next thing you know they’ve got 8 good sentences. Some of them tap into their deep well of creativity and hilarity ensues.
It’s a good day. We get creative, we write in math, my check for understanding at the end of class usually reveals that everyone gets the idea of a syllogism, so we connect the activity back to the vocabulary. Checks a lot of boxes.
In an A/B block schedule I have to be careful about taking a day to step out of the curriculum map. But this activity has a high ROI in terms of understanding building an argument of factual statements. Worth the cost.
If I had four hours to chop down a tree, I’d spend the first two hours sharpening the axe
Not said by who you think said it, by the way
Monday we can go back to furrowing our brows over proving angles congruent or whatever.