Los Angeles Math Circle

LAMC Meetings • 2019-2020 Academic Year

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For meetings prior to Fall 2019, visit the Circle Archive.

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To start out the quarter, we will be developing logic skills by looking at problems with hats and doors. The goal of this handout is to learn how to make an assumption, test the assumption, and readjust the original assumption if necessary.

Handouts: handout | solutions
An alternate method of multiplication based in binary numbers and the basic ideas of the distributive property.

Handouts: Handout | solutions

We will continue with different ways to multiplying 2 numbers. This week we will look at Russian Peasant Multiplication, which, surprisingly, has no relation to Russia or Peasants. However, this will be another good way to show the students how to write numbers as sum of powers of 2

Handouts: handout | answers

This packet introduces the topic of exponents, some of their properties, and size comparison!


Continuing last week's handout!

Handouts: handout | pg 4 answers

Review what we learned about exponents and continue to build how to compare numbers


A look at how we can organize multiple sets of objects/people/things using venn diagrams!


This week we will be looking at what it means for shapes to be similar, as well as exploring how we can add on to a shape to create another that is similar to the original.


For the last meeting of 2019, we will be playing a Math Review Game!


We started a warm-up discussing auction theory. We will begin our exploration of game theory by starting with the example of subtraction games of varying subtraction sets.

Handouts: handout | solutions

This week we started off class discussing "I cut you choose." We then continued will be continuing our discussion of subtraction games, in particular the Game 21. With 21 sticks, each player can either take away 1,2, or 3 sticks each turn, what is the winning strategy if you don't want to take the last stick? If you want to take the last one? How are these two related?


This week, we will be preparing for the Math Kangaroo contest by working out various types of problems!