Sunday, January 7, 2018

Math 1.0 Spring 2018 Overview

Spring 2018 Overview

This semester we will focus on coordinate systems, functions, graphs, and logic.

We will begin working with two texts. David will cover coordinate systems and Qiong will cover logic.

Textbooks


1. The Method of Coordinates by Gelfand, Glagoleva and Krillov (1990)  

The introduction begins thus:





read more below:



2. Logical Labyrinths by Raymond Smullyan (2009)

From the preface:

What is symbolic logic? It is also called “mathematical logic,” though the word “mathematics” here has a totally different meaning than the mathematics usually taught in the schools—arithmetic, algebra and geometry. Mathematical logic, instead of dealing specifically with things like numbers, lines and points, deals rather with propositions and arguments, but codified in symbolic forms to facilitate more precise reasoning...

As valuable as symbolic logic is, I have learned from much teaching experience that it is best to begin by devoting some time to informal reasoning. The logic of lying and truth-telling is admirably suited to this, being both entertaining and highly instructive; so this is how we begin in Part I of this book, in which you follow the remarkable journey of the anthropologist Abercrombie through successively more labyrinthine lands of more and more curious liars and truth-tellers of the most varied and sundry sort, culminating in one grand discovery that generalizes all the problems of the preceding adventures. This prepares the readerfor Part II, which begins the formal study of symbolic logic. Part II begins with the subject known as propositional logic, shows how this logic formalizes the reasoning of the earlier chapters, and then advances to the main subject of this book, which is first-order logic, a subject that has many important applications in philosophy, mathematics and computer science...

This book can be used as a textbook for a one- or two-semester coursein logic. A pre-publication copy has been successfully used in this manner at Harvard.


Monday, October 16, 2017

October 15, 2017 - Math Circle 2.0

Warm Up

Find the solutions to the following algebraic equations.

5 + x = 8
8 - y = 1
4 + 5 = z + 6

Game Theory

Play the nickel and penny game that we introduced last session with a partner.  Does any player have an advantage?

Remember the game:
A penny is worth one cent and a nickel is worth 5 cents.

There are two players to the game, player one and player two.  Both players will pick a coin in secret to play.  If both coins that are played match, player one wins both coins.  If both coins that are played do not match, player two wins both coins.  

Create payoff matrix for the nickel and penny game that we discussed in the previous math circle.  

What would happen if we added a dime to the mix to create a dime, nickel and penny game?  Let's answer next class.


Sunday, October 8, 2017

October 8. 2017 - Math Circle 2.0

Warm Up

Perimeters of squares and circumferences of circles.  

Game Theory

Last class, we learned how to express a the game paper, rock, scissors in a pay-off matrix.  We found that the game was very balanced in which no player really had an advantage over another player.  Let's try another game....  Pennies and nickels.

A penny is worth one cent and a nickel is worth 5 cents.

There are two players to the game, player one and player two.  Both players will pick a coin in secret to play.  If both coins that are played match, player one wins both coins.  If both coins that are played do not match, player two wins both coins.  Play the game at home and see if you can find a winning strategy to win the most money.

Counting

There are three dogs:  Charlotte, Ozzy, and Rosie.  Each dog has a choice of one of four types of snacks:  Bone, Cupcake, Food, and Treats.  There is only one of each snack so two of the dogs cannot receive cupcake, for example.  Using your counting skills, map out the possible combinations of dogs and snacks.  There are 4 x 3 x 2, or 24 combinations.

Here are some combinations to get started:

               Ozzy        Rosie        Charlotte
1.            Bone        Cupcake   Food
2.            Bone        Cupcake   Treats
3.            Bone        Food         Cupcake
4.            Bone        Food         Treats
 

Map the rest of the combinations for homework.




October 1, 2017 - Math Circle 2.0

Homework Review

Using the supplied cup, measure the circumference of the cup.  Next, draw a square that inscribes the circle.  Is the perimeter of the square greater than the circumference of the circle?


Circumference of the circle

Use a string to mesasure the circumference of a set of circles.  Compare the diameter of the circles to the circumference.  In all cases, the circumference of the circle is a little over 3 times the diameter of the circle.  The number that expresses the ratio of diameter to circumference is represented by the greek letter pi.


Rock Paper Scissors

Learn how to play Rock, Paper, Scissors.  

Can you win at Rock Paper Scissors with a strategy?  Create a payoff matrix.

From:  http://shack.typepad.com/shack_in_japan/2012/05/game-theory-for-middle-school-day-1-payoff-matrices-and-rock-paper-scissors.html