# Spencer Bowen

In Mind Reading with Math we showed how you could use binary to read someone’s mind.   For that activity, we used a set of cards representing the first four binary place values: 8, 4, 2, 1. Binary only has two digits: “1” or “0” (which could also be thought of as “yes” or “no”).  This …

## Folding Perfect Thirds Using math

This week’s activity comes from James Tanton of the Global Math Project and G’Day Math. He’s also demonstrated this activity and similar problems for the Math Teachers’ Circle Network. Facebook Twitter how to fold a tie into perfect thirds Imagine you’re packing for a trip, and you’re planning on bringing your favorite tie. It’s too …

## Four Activities from Math Monday

This week we’re highlighting a few activities previously demonstrated on Math Monday by Puzzle Master and Math Monday founder Scott Kim. You can also view these broadcasts and more on our Math Monday Youtube Playlist. Facebook Twitter Bongard Problems https://youtu.be/w5oprHOE0NU In this session, student learn about Bongard Problems — logic puzzles named for Russian computer scientist …

## Prejudiced Polygons

This week’s activity features a neighborhood populated by Squares and Triangles that are slightly “shapist” (but only slightly) and don’t seem to coexist too well.  We’ll be exploring “Parable of the Polygons” by Vi Hart and Nicky Case and giving some tips to get students started with this activity. Facebook Twitter Click here for the …

## Frog Jumping & Stack Up

This week’s activity is a great puzzle to work on with materials lying around the house, or using our online applet.  This problem was first inspired by MathPickle.com and their activity Jumping Frogs, with Stack Up developed by the Julia Robinson Mathematics Festival and the Math Teachers’ Circle Network. Facebook Twitter Jumping Frogs The main goal of this …

## Humans, Zombies, & Other Problems crossing the river

This activity takes a couple of classic logic puzzles and adapts them to better suit K-12 audiences. It was designed in the Desmos Activity Builder, so it can be played online and easily given to a classroom of students. The activity as presented was developed at the San Francisco Math Circle, and was recently featured on …