For this meeting, Sarah invited us to explore the weird and wonderful world of numbers between 0 and 1. We started with a notice/wonder on this set of equations (suggested by Eric):
What Would I Think If I Didn’t Know?
Category: Why Things Work
Happy Numbers
For this month’s meeting, we returned to explore some numbers we first encountered in CAMI back in 2015 (Happy Numbers and the Melancoil).
After some community building, we started our exploration with a notice/wonder of this diagram.
Sarah’s Passing Drill
In another edition of revisiting problems from the CAMI vaults, at this month’s meeting we went back to further explore a number pattern we first looked at in January 2017 (Carl’s Basketball Problem).
We started off discussing WHAT IS SIMILAR? WHAT IS DIFFERENT? looking at these four expressions:
Diagonals in Rectangles
2024 marks the 10th anniversary of CAMI (!) and to honor all we have learned and all the ways we have grown as a group, we are going into the vaults for a few CAMI meeting, to reopen and revisit some of our early explorations together. This month’s meeting was a new take on a problem we explored in June 2016 at Making and Testing Conjectures: The Diagonal Problem.
We started with a Which One Doesn’t Belong?
Shadow Math
During our Tuesday, April 18th CAMI meeting, Gina Cortez and Amy Vickers facilitated a conversation around shadows.
Notice/Wonder
We showed this slide and asked the group what they noticed and wondered.
Why are maintenance covers round?
In the December evening meeting, Amy Vickers led us through a new exploration that was loosely inspired by last month’s meeting on some circles.
As a warm-up, Amy presented us with this question: Why might a manhole cover (or, in the gender-neutral, maintenance cover) be round? One of the central ideas that came up in the resulting discussion was that a circle won’t fall through its own hole, no matter which way you turn it. It has a constant diameter, or constant width.
Voronoi Patterns
Whole Group
We started this meeting with a Which One Doesn’t Belong which also included talking about what the four pictures have in common:
Modeling the Coronavirus
Usha took advantage of the fact that we are all sitting in front of computers to lead us through a modeling exercise in Excel.
After some spreadsheet basics, Usha led us through a meeting in which worked in groups to think about modeling some aspect of the COVID19 outbreak.
Continue reading “Modeling the Coronavirus”For the COVID19 virus, pose 3 specific quantitative questions, the answers to which would be useful in your role as health commissioner. Try to consider questions that can be dealt with mathematically.
Card Puzzles and Tricks
Solange shared some card puzzles and tricks that she has been playing with. Our job was to figure out how they worked.
The first card “trick” (more of a puzzle, really) was from Marilyn Burns’ blog. It’s called the 1-10 card investigation.
“Reversed” Ages
A simple situation with a mother and daughter’s ages leads to many questions and interesting observations.
In August, at a summer board meeting of the Adult Numeracy Network, the fabulous Sarah Lonberg-Lew (@MathSarahLL) shared a problem. Well, it wasn’t really a problem, more like something she noticed. In the meeting, she asked what we noticed and what questions we might ask.
