# Days 157, 158, 159, 160: Rolling Cups

I assigned this as a final project for my geometry classes. I wanted to see (and I wanted students to see) how well they could apply their mathematical skills to real world applications. I struggle with being less helpful, while keeping students from giving up, so i really studied all of the suggested questions that go with this lesson described by the Mathematics Assessment Project. I did not follow the lesson exactly as designed, but instead adapted it for my students. I broke the project down over four 50 minute class periods:

Day 1: Introduce activity, students work in pairs: turn in all thoughts & notes for feedback at end of class. This evening I replied with next steps / questions to keep students making progress the next day.

Day 2: Time to work, select students to informally present their noticing’s so far. Introduce the cup calculator for students to study patterns and test hypotheses.

Day 3: Students analyze sample solutions, then begin revising their own work.

Day 4: Final work day & reflections, discussions, presentations

Next year I’d like to add time at the beginning for noticing & wondering & individual student work before they begin working in pairs. My fear is that many students will not even try just because they are not sure where or how to start.

## 6 thoughts on “Days 157, 158, 159, 160: Rolling Cups”

1. I just stumbled onto your blog and it looks amazing! I love how you are summarizing everything you did for a whole year. Definitely going to be reading more of this!

• Lisa Bejarano says:

Thank you so much John! Please let me know if you have any questions or suggestions.

2. jwilson828 says:

I’m trying to incorporate a bit of modeling earlier in the year in geometry. We started with rigid motions and are about to do tools of geometry/constructions. Unit 3 is logic/proofs for parallel lines, triangles, etc., but I want to possibly put Rolling Cups in between Units 2 and 3. Would your students have been able to do this early on? Or do you think they’d need more content before trying it? I teach high school geometry.

3. Anne says:

Hi, you do a great job of explaining what/how you taught. Thank you.
Question: you say final project. Final project for the year?

• Lisa Bejarano says:

Thank You! The year that I blogged about geometry daily, I did it as a final project at the end of the school year. Since then though, I use this as the first semester capstone project.