• Thirteen Ways of Looking at Multiplication Tables (January 23, 2018)
    Looking for the surprising in the familiar, we see what happens when you look, really look, at the multiplication table and tumble through the looking glass.

  • Mondrian Art Puzzle (December 9, 2017)
    CAMI plays around with a way to practice multiplication, think about area and extend into algebra and generalizations. Through art!

  • Mark’s Metrocard (November 10, 2017)
    Have you ever noticed the money left over on a Metrocard when you have "insufficient funds" to ride the train? Is it possible to break even? It seems to be part of an MTA conspiracy.

  • Multiple Factors (October 14, 2017)
    Several engaging activities for exploring factors. Which would you use for HSE math classes and how would you use them?

  • Can you fit more boxes in a shipping container than Jane can? (September 15, 2017)
    Exploring some of the mathematics in packing a shipping container.

  • Tropicana Cash Wheel (July 20, 2017)
    In this meeting, Steve challenged us to figure out the best of some bad choices at the casino.

  • Exploring Algebraic Thinking in a Math Teachers’ Circle (July 17, 2017)
    How to use an inquiry-based exploration of visual thinking to develop algebraic thinking in our adult numeracy and hse classes.

  • Exploration of Consecutive Numbers (June 13, 2017)
    In this meeting, Usha returned to lead an exploration of consecutive numbers through a low-entry, high-ceiling problem she recommends as an introduction to functions/algebra.

  • Growing Rectangles (May 19, 2017)
    This task, from Mathematical Mindsets, by Jo Boaler, asked us to explore how area and volume are affected when shapes are scaled up in size. For example, if you double the dimensions of a square,…

  • CAMI Roadshow: 2017 COABE and NYC Adult Basic Education Conferences (April 29, 2017)
    CAMI did a few workshops in April, sharing our teaching circle's work on exploring real-life math through three-act math tasks.

  • Making Trains from Cuisenaire Rods (April 13, 2017)
    Inspired by Mathematical Mindsets, by Jo Boaler, we explored questions related to "trains" made out of Cuisenaire rods.

  • Multiple Ways of Multiplying (March 10, 2017)
    We explored multiplication through a number talk and alternative algorithms for calculating products.

  • What Do You Do with a Dizzy Sailor? (February 8, 2017)
    CAMI often goes back and forth between problems that challenge us as problem-solvers and those which we could use to develop problem-solving in our students. At this meeting, Solange bridges the divide and does both.

  • Carl’s Basketball Problem (January 11, 2017)
    With a simple set up, CAMI enters a rabbit hole of notice/wonder and number patterns.

  • Gerrymandering Math (November 9, 2016)
    Can math save us from dark depression?

  • CAMI Roadshow: NCTM 2016 (November 3, 2016)
    CAMI celebrated its two year anniversary with a few founding CAMI members representing our teachers' circle at this year's regional NCTM conference in Philadelphia.

  • Dana’s Rectangle (October 13, 2016)
    Inspired by the work of the Navajo Math Circle, CAMI explores the area of rectangles and their borders, testing conjectures and making generalizations.

  • The Lawn Mower Problem (September 14, 2016)
    What happens when we let students write the questions?

  • Grid Power (July 21, 2016)
    What mathematical questions can you ask of a blank piece of grid paper?

  • Making and Testing Conjectures: The Diagonal Problem (June 14, 2016)
    Draw a rectangle on grid paper and draw a diagonal. Is there a way to predict the number of squares the diagonal will pass through?

  • Millions and Billions (May 18, 2016)
    I need your help visualizing millions and billions.

  • Resources from NCTM 2016 (May 14, 2016)
    So many games, puzzles and problems from the NCTM annual meeting...

  • Roller Derby (& probabilities in passing HSE exams) (April 19, 2016)
    April's meeting was in two parts: First we played a dice game named Roller Derby, developing and analyzing game strategies. Then we discussed some of the odds of the TASC.

  • CAMI Roadshow: COABE 2016 (April 11, 2016)
    Facilitating a meeting in Dallas, while live-tweeting with teachers in NYC, we explored a visual pattern to model what our teachers' circle is all about.

  • Graphing Area vs. Perimeter (March 28, 2016)
    What do you notice? What questions do you have?

  • Keep it in the Family (with Pythagorean Triples) (March 8, 2016)
    Many of us are familiar with the 3, 4, 5 right triangle, and maybe the 5, 12, 13. Do you know any others? Is there a pattern to these triples?

  • CAMI Roadshow: 2016 CUNY NYC Adult Literacy Institute (January 22, 2016)
    The CAMI Roadshow did a workshop at the CUNY NYC Adult Literacy Institute, January 22, 2016

  • Slip Sliding Away (January 8, 2016)
    A look at the slip slide method of factoring polynomials

  • Signed Number Pyramids (December 11, 2015)
    Using number pyramids to practice adding signed numbers leads to a surprising discovery.

  • Pascal’s Triangle (November 13, 2015)
    A big thank you to Turning Point for hosting us this month and raising the bar for all future hosts. We started with a tour of TP"s building and saw their classrooms, offices, and rooftop…

  • Three-Act Math: Probability in Craps (October 13, 2015)
    What are the odds of winning at craps? Is craps a fair game? What's your chance of making the point? A three-act math task inspires some questions in probability.

  • Happy Numbers and the Melancoil (September 18, 2015)
    Our work on this month's problem led us to the beginning of a larger exploration of a very curious repeated loop in a certain sequence of numbers.

  • Three-Act Math: The Royal Flush (July 10, 2015)
    This was the third time CAMI tried out using a 3-Act math task. This one is called Royal Flush and is organized around the probability of a poker hand in Texas Hold'em.

  • Three-Act Math: Super Stairs (June 9, 2015)
    For our second three-act math task, we learn it is sometimes just as interesting when mathematical models do not work and we have to figure out why.

  • CAMI Roadshow: 2015 NYC ABE Conference (May 16, 2015)
    The CAMI Roadshow worked with teachers at the 2015 NYC ABE Conference

  • Three-Act Math: Pyramid of Pennies (May 8, 2015)
    We talked about problem-posing and inspiring student curiosity in math as we tried out a three-act math task created by Dan Meyer

  • CAMI Grab Bag (April 14, 2015)
    At this CAMI meeting we looked at 3 different problems: Four Fours Problem (Numberphile did a video on this problem) 24 (the Game) Broken Calculator

  • The Mathematics of How CAMI Got Its Name (March 13, 2015)
    What does it mean for a decision to be democratic? What role can math play? We explore 7 different voting methods to find out (and name our math teacher circle).

  • Problem-Posing with Visual Patterns (February 10, 2015)
    We can get conditioned to approach visual patterns in a particular way and jump immediately to the problem of looking for the nth figure (# of squares, for example). Beginning with an open, problem-posing approach…

  • Toothpick Patterns: Growing Squares, Growing Triangles, Growing Stairs (January 13, 2015)
    We wanted to build off the problem from last meeting, exploring visual patterns, with a focus on different ways of approaching these problems and how can we bring them into the classroom.

  • Pentagon Patterns (December 16, 2014)
    Still looking for a name for our group, we went around introducing ourselves and each offered one word for our group vision: Fun, Math, Community, Community, Building, Sharing, Other People's Thoughts, Resources, Escape, Learning, Ideas,…

  • 10 Problems: Our First Meeting! (November 12, 2014)
    “No matter how kindly, clearly, patiently, or slowly teachers explain, they cannot make students understand. Understanding takes place in the students’ minds as they connect new information with previously developed ideas, and teaching through problem…