# The BMC is now recruiting for 2017–18

Please apply for the 2017–18 Boise Math Circle program! The BMC is open to middle and high school students with some experience in algebra. If you like solving problems and want to learn more about the creative side of math, please consider applying. If you have a friend that does, invite them to apply too!

We are excited to announce one small change to our program. If you are familiar with our sessions, we generally spend all 90 minutes on an in-depth exploration. This Fall, we will begin each session with a quick introduction to a major concept in math, and then proceed with a closely related exploration afterwards. This means participants will learn or review key concepts such as modular arithmetic, matrices, enumerations, logic, and more!

We will begin on Saturday morning, September 2, and meet 15 times during the school year. See our schedule of meeting dates.

# Falling Chickens

In this circle we investigated something called the “falling sand pile”. But sand is boring, so instead we studied falling chickens! The primary rule of falling chickens is

When 4 chickens land in someone’s backyard, they “break out” and go to the neighbors’ yards instead.

# A tree of fractions

Have you ever tried to list out all of the rational numbers? In this lesson we explored a nifty way of writing all rational numbers called the Calkin—Wilf tree. Continue reading A tree of fractions

# The logic of calculators

How can a calculator use the flow of electricity to add two numbers together? In this activity we explored the building blocks of electrical circuits, and the mathematical logic that lies behind it.

# Parametric equations

In this activity we explored periodic parametric curves. We particularly studied the patterns that arise when you change the periods of the $x(t)$ and $y(t)$ coordinates. To start playing around with parametric curves, you will need geogebra. Then you can use the following link to download our geogebra worksheet!

Parametric curve worksheet

# Bart vs Lisa vs Fractions

Bart and Lisa compete in a two-day spelling contest. On the first day, Lisa gets a higher percentage right than Bart. And on the second day, Lisa gets a higher percentage right than Bart. So why did Bart win?? Continue reading Bart vs Lisa vs Fractions

# Math Teacher’s Circle–Ellipses, coins, and fractals

Last Saturday we had the first of four Boise Math Teachers’ Circle meetings for 2016–2017. The four-hour session contained an in-depth look at three different math problems: one in geometry, one in number theory, and one in topology. Continue reading Math Teacher’s Circle–Ellipses, coins, and fractals

# Adding together infinitely many numbers

It is often necessary to add more than two numbers together. For example, you might have made 137 deposits to your bank account this year, and wonder how much you contributed in total. But is it possible to add infinitely many numbers together? The answer is that sometimes it is possible, and sometimes it isn’t! In this discussion we investigated when, why, and how! Continue reading Adding together infinitely many numbers

# Boise Math Teachers’ Circle recruiting for 2016-2017

The Boise Math Teachers’ Circle is excited to announce our program for the 2016–17 school year! The BMTC is open to K–12 mathematics educators. We will meet four Saturdays, for four hours each, to discover exciting math concepts and tackle challenging math problems together.

### Our session dates

• Saturday, October 22, 2016
• Saturday, January 21, 2017
• Saturday, February 25, 2017
• Saturday, April 15, 2017