Activity Posts

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How to Create Our Interlocking Tetrahedra Logo

Share on facebook Facebook Share on twitter Twitter A tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of 4 triangular faces, 6 straight edges, and 4 vertex corners (vertices). Our newsletter logo is made of 5 interlocking tetrahedra. Each is shown in a different color and is made from 6 strips of paper with dimensions in the ratio

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The Gobbling Math Turkey Game

Facebook Twitter Here’s a game that’s sure to get you into a gobbly good mood for Thanksgiving while reinforcing your knowledge of the order of mathematical operations at the very same time!  All you need are the following items to get started:  One 6-sided die A one-minute timer (a watch or kitchen timer works well) Pens or pencils Scratch paper

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SETS, Planets, and Comets

Original Print This article was original published by the Mathematical Association of America in The College Mathematics Journal, Vol. 44, No. 4 (September 2013), pp. 258-264 The Authors Mark Baker teaches at Cabrillo Middle School in Santa Clara, CA. Jane Beltran teaches at Pajaro Valley High School in Watsonville, CA. Jason Buell teaches at Crittenden Middle School in Mountain View.

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Tie Folding

Let p be an odd prime. (Generalizations to p simply being an odd number way at end of this article.) Suppose a tie is folded with proportion a / p to the left of the fold and proportion b / p to the right of the fold, with a + b = p. Precisely one of a or b is

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Activity

Polygons & prejudice 2.0

Reflections from Anne: In 2016, Tara T. Craig (University of Texas) and I adapted Vi Hart and Nicky Case’s “Parable of the Polygons” (2014) for a Math Teachers’ Circle activity to consider the dynamics of a polygon neighborhood. In the neighborhood, polygons preferred having neighbors who were like them. Triangles enjoyed having other Triangles as neighbors, and Squares enjoyed having other

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Activity

Family Fun: Achi!

This article was originally published in the Summer Math Mind Stretchers, Issue #1 by the AIMC (Alliance of Indigenous Math Circles).  Achi is a game played by the Ashanti people of Ghana in West Africa. This two-player game is played on a three-by-three diagram of horizontal and vertical lines and two diagonals. Achi is like tic-tac-toe, but with a twist. Each

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Activity

Wolves and Sheep

Wolves and Sheep Here’s your chance to be the hero of the story! Help keep the big bad wolf from eating the three little… sheep. Well, I guess it’s not the same story – and unfortunately, the sheep live in a field, not a house – but you get the idea. To start this activity, you’re going to need two different

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Activity

Adventures in Exploding Dots: A six-lesson series

I, James, recently led a Zoom lesson to introduce the topic of Exploding Dots to students, educators, and math enthusiasts across the nation, the first of six lessons to come on the topic. I began with the classic mind-reading trick of sharing on the screen the following five groups of numbers. I asked each participant to look within each group

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Conway’s Game of Life

For my July 15th presentation to the online Math Teacher Circle Workshop, I chose to introduce teachers to Conway’s Game of Life, a deeply fascinating game with deceptively simple rules. I chose Life because I think it is one of the most thought-provoking yet accessible mathematical creations of the last century. Share on facebook Facebook Share on twitter Twitter https://youtu.be/WEz2SMCY4is The rock

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Bubbling Cauldrons

Bubbling Cauldrons: Bring Out your Inner Alchemist! For this activity, you will need the following materials: counters with numbers 1-30 on them, and 3 cauldron cutouts (you can print out this worksheet if you’d like).  Starting with just 2 cauldrons, place the counters into the cauldrons in ascending order – you can choose which cauldron each one goes in. However, there’s

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The Ins & Outs of Color Counting

Grab 5 or 6 different-colored sets of around 10-20 things – preferably stackable, like blocks or poker chips, but anything you can arrange into piles will do. The general idea is that we want to build towers of increasing height (starting from 1, then 2, and so on) using the different colors as our building blocks, where each color represents

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The Mathematics And Strategy Behind Gerrymandering​

If you are unfamiliar with the term, Merriam Webster defines gerrymandering as “the practice of dividing or arranging a territorial unit into election districts in a way that gives one political party an unfair advantage in elections.” But rather than trying to make sense of that long string of words, let’s start with a simpler, visual representation. Share on facebook

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Magic Squares: A Detailed Strategy Guide​

Magic Squares are simple to explain, yet they can easily lead to hours of fun mathematical explorations. For those of you who are new to the Magic Squares problem, the idea is this: Given n greater than or equal to 3, can you find an n-by-n grid of n^2 consecutive numbers where all the columns, rows, and diagonals add up to

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Article

A Visit from a Mathematician

With classrooms nationwide currently being held online, the American Institute of Mathematics has been offering schools the opportunity to receive a virtual visit from a mathematician, furthering educational enrichment and experience for their students. I’ve had the opportunity to visit ten different classrooms this fall, each time providing students with a math activity that feels unique and engaging. Share on

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Article

Global Math Week 2020

EXPLODING DOTS all live lessons all year long.Check out our events calendar! Facebook Twitter Dear Math Friends: This past month the Global Math Project conducted its fourth annual Global Math Week, October 10 – 17 (a generous week!). And joyous mathematics certainly did resound around the planet. Despite the uncertainty of these times, full of obstacle and challenge, teachers and students nonetheless

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Article

Morgan Hill Math

The MATHCOUNTS Coyote Valley Chapter Competition is about to begin. The 2019-2020 school year ended like no other for Morgan Hill Math, when we had to adapt to distance enrichment. Morgan Hill Math is an outreach program sponsored by the American Institute of Mathematics (AIM), which provides free math enrichment activities to about 300 students each year, who live in

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Article

A Teacher and a Mathematician

A Math Teachers’ Circle immersion workshop is an intensive experience focused on mathematics and creating community. Recommended as the first “big event” for a new Math Teachers’ Circle, an immersion workshop has enormous potential to affect teachers’ beliefs about themselves, their mathematics abilities, and the nature of mathematics—or their mathematics identity. The MTC immersion experience puts teachers in the sometimes

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Article

Taking AIM at COVID-19

This article was originally published in the AIMatters newsletter and written by Estelle Basor. Over forty graduate students and advanced undergraduates participated in an online summer program to study dynamics and data in the COVID-19 pandemic. The program was sponsored by AIM and the NSF.  Students had the opportunity to learn the basic mathematical epidemiology underlying the models used in studying

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Article

Virtual Math Festival Engages Students

On Saturday morning, May 9th, 65 students and 20 adult volunteers chose to start their day off with math! The Santa Cruz County Office of Education’s (SCCOE) first-ever Virtual Math Festival offered students in grades 5-8 the opportunity to participate in advanced and thought-provoking mathematics in an online, social and cooperative atmosphere. Students logged onto an online conversation hall, and

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Article

Global Joy: Uplifting Mathematics In Classroom across the Planet

Share on facebook Facebook Share on twitter Twitter During a special week in October of 2017 a global phenomenon in mathematics education and outreach occurred: thousands of math teachers, club organizers, and math outreach leaders from over 150 different countries and territories opened their classroom doors and engaged in a common, joyous piece of school-relevant mathematics with over 1.7 million

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Article

Alliance of Indigenous Math Circles

Share on facebook Facebook Share on twitter Twitter The Alliance of Indigenous Math Circles is devoted to supporting mathematical culture within indigenous communities.  We form partnerships throughout the U.S. in order to build local opportunities for students, teachers, and families to enjoy mathematics and engage in problem solving together, while also celebrating their indigenous cultural identity.  Our key activities include

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Article

Math Monday — weekly math games for all kids to enjoy

Share on facebook Facebook Share on twitter Twitter I’ve always loved mathematical games and puzzles. In fact it was reading puzzle books that taught me how to think mathematically, and fall in love with the subject. Unfortunately, schools have little time for math fun, especially with the pressures of state standards and standardized testing. Just as we read to our

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Article

Virtual Math Festivals

On Saturday, May 9, 2020, over 70 fifth through eighth grade students from Santa Cruz County participated in AIM’s first ever “Virtual Math Festival.” Share on facebook Facebook Share on twitter Twitter Screenshot of the virtual festival hall with tables of attendees As a response to the COVID-19 pandemic, the festival was hosted entirely online, taking place in a virtual

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Article

Teacher Circle Online Workshop

MTC Network Virtual Summer Workshop This July, the Math Teachers’ Circle Network and AIM hosted a virtual workshop to offer free professional development and online experience to K-12 teachers throughout the nation.  Teachers participating in the “Acting Out Mathematics” Session with Dr. Hortensia Soto. Over 250 teachers participated in the workshop, attending from all around the US as well as

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