Suppose you are sending a crew of scientists to the moons of Mars: Phobos and Deimos. The scientists are botanists, geologists, and mathematicians, or any combination of the three. You want to divide the crew into to halves so that each moon gets an equal number of each scientists. When can this be done? Continue reading Mars moon mission

# The BMC is now recruiting for 2016–17

The Boise Math Circle is excited to announce we’ll be continuing our program throughout the 2016–17 school year! 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 will begin on Saturday morning, September 10, and meet approximately every two weeks. See our schedule of meeting dates.

- More About the Boise Math Circle
- Program Directors
- Schedule of Circle Meetings
- Recent Circle Meetings
- Printable BMC Flyer
**Apply Now!**

## Teachers

Please help us recruit participants by letting your students know about the program. If you’d like attendance reports for your students (e.g., for extra credit), please send us an email. You’re of course welcome to join the sessions.

# The game SET

The card game SET is well-known amongst game players. Each card has four characteristics, and each characteristic has three outcomes. Twelve cards are placed face up, and players try to find a set of three cards with each characteristic all the same or all different. It turns out there is a lot of math going on! For example, are twelve cards enough to guarantee you will be able to find a set? If not how many do you need? Continue reading The game SET

# Cave person games

What kinds of games can be played using just stones? It turns out quite a few! In this session we investigated three games in particular. Continue reading Cave person games

# Taking in the whole room

Suppose you have a room, and you need to guard it using ceiling mounted cameras. Assume the cameras can see in 360 degrees. If the room is very simple, such as a square shape, you can get away with just one. But if the room is more complicated, say with nooks and crannies, you may need many cameras. How can you find how many? Continue reading Taking in the whole room

# Multiplying points in the plane

It is easy to add points in the plane “coordinatewise”, that is, by writing (x,y)+(z,w)=(x+z,y+w). This even has a very nice geometric interpretation: completing the parallelogram with first three corners (0,0), (x,y), and (z,w). But it isn’t easy to multiply points because the simple rule (x,y)*(z,w)=(xz,yw) doesn’t allow division. In this activity we looked for something better. Continue reading Multiplying points in the plane

# Graph isomorphism

A *graph* is a collection of dots (called vertices) joined by curve segments (called edges). It doesn’t matter how you name the vertices and it doesn’t matter where you put them in your drawing. Two graphs are called *isomorphic* if you can rearrange the way one of them is drawn to make it look like the other. So for example you might convince yourself that a pentagon and pentagram are isomorphic to each other.

# Sudoku and latin squares

Today our guests Liljana Babinkostova and Marion Scheepers (both BSU math professors) led a discussion of sudoku and counting. Continue reading Sudoku and latin squares

# STEM exploration day

Today we didn’t have a lesson, but instead toured the campus science fair! Check out the pictures after the jump. Continue reading STEM exploration day

# Toroidal polyhedra

This may sound like a fancy title, but it just means figures with flat sides and a hole in the middle! Continue reading Toroidal polyhedra