Javier Haro – MathCircles.org

The Dollar Game

By:

Topic(s):

Mathematical Games, Problem Solving / General

Supporting Resources:

Facilitator Guides, Photos & Videos, References, Virtual Tools

A group of people, some that just met, have a dilemma. Some people owe money and some have money. Problem is that only people that know each other, connected by nodes, can give or lend a dollar. But they must give each person they know a dollar, even if that...

Mind Reading With Math

By:

Javier Haro, Spencer Bowen, Tyler Knapp

Topic(s):

Algebra / Arithmetic, Mathematical Games, Problem Solving / General

Supporting Resources:

Facilitator Guides, Handouts, Photos & Videos

For the Math Mind Reading Trick, you’ll need a volunteer who’s willing to have their mind read. The person performing the trick holds out the four cards and askes their volunteer to pick a number (whole numbers only, no fractions allowed!) between 1 and 15 and keep it a secret....

Humans, Zombies, & Other Problems Crossing the River

By:

David Klein, Javier Haro, Spencer Bowen

Topic(s):

Mathematical Modeling, Problem Solving / General

Supporting Resources:

Facilitator Guides, Photos & Videos, Virtual Tools

A town faces an epidemic of zombies! Luckily, the virus has just started to spread and the infected are able to stave off their hunger for human brains… for now. In fact, they’re willing to work alongside the remaining humans to help them get across a river to safety. Can...

Activity Database

The Dollar Game

Mind Reading With Math

Humans, Zombies, & Other Problems Crossing the River