# MATHEMATICAL LETTERS

We have two sets of essays:

**CURRICULUM ESSAYS** for cool math for the classroom, and

**COOL MATH ESSAYS** for cool math in general.

Scroll down for the essays of interest.

If you would like to receive these monthly math essays directly via email, just let me know at TANTON.MATH@GMAIL.COM and I’ll add you to the email list.

[But one can just keep coming here to check them out!]

Curriculum Essay_May 2015_IRRATIONAL NUMBERS

Curriculum Essay_April 2015_SLOPE

Curriculum Essay_March 2015_TEACHING ALGORITHMS

Curriculum Essay_February 2015_WHY DO WE NEED TO KNOW THIS?

Curriculum Essay_January2015_ON SIMPLIFY

Curriculum Essay_December2014_TRIG ADDITION

Curriculum Essay_November2014_POLYNOMIAL DIVISION

Curriculum Essay_October2014_ON THE WORD OF

Curriculum Essay_September2014_AREA and PROBABILITY

Curriculum Essay_August2014_LINE OF BEST FIT

Curriculum Essay_July 2014_MEAN AND VARIATION

Curriculum Essay_June 2014_ABSOLUTE VALUE

Curriculum Essay_May 2014_PYTHAGORAS PRECURSOR

Curriculum Essay_April 2014_CIRCLE THEOREMS

Curriculum Essay_March 2014_FRACTIONS ARE HARD

Curriculum Essay_February 2014_MATRICES

Curriculum Essay_January 2014_VECTORS

Curriculum Essay_December 2013_SPECIAL TRIANGLES

Curriculum Essay_November 2013_On Significant Figures

Curriculum Essay_October 2013_On Thales Theorem

Curriculum Essay_September 2013_On the AREA OF A TRIANGLE formula

Curriculum Essay_June 2013: PILES AND HOLES

Curriculum Essay_May 2013: FITTING EQUATIONS TO DATA

Curriculum Essay_April 2013: LOGARITHMS

Curriculum Essay_March 2013: The VINCULUM

Curriculum Essay_February 2013: WHO CHOSE THOSE NUMBERS?

Curriculum Essay_January 2013: ARE CIRCLES SIMILAR?

Curriculum Essay_December 2012: TROUBLESOME ZERO

Curriculum Essay_April 2012: GRAPHING QUADRATICS

Curriculum Essay_May 2012: UTILISING SYMMETRY IN QUADRATICS

Curriculum Essay_June 2012: DOES ORDER MATTER?

Curriculum Essay_July 2012: ANGLES IN A TRIANGLE

Curriculum Essay_August 2012: THE PARADOX OF AREA

Curriculum Essay_September 2012: 0.9999….

Curriculum Essay_October 2012: WHY IS NEGATIVE TIMES NEGATIVE POSITIVE?

Curriculum Essay_November 2012: ASSESSMENT THOUGHTS

Cool Math Essay_MAY 2015_Compositional Square Roots

Cool Math Essay_APRIL 2015_Weird Multiplication

Cool Math Essay_MARCH 2015_Intermediate Positions

Cool Math Essay_FEBRUARY 2015_Wrapping-Paper Slices

Cool Math Essay_JANUARY 2015_Leapfrog Plus

Cool Math Essay_DECEMBER 2014_Two Trig Puzzles

Cool Math Essay_NOVEMBER 2014_Polynomial Fun

Cool Math Essay_OCTOBER 2014_Parabolic Multiplication

Cool Math Essay_SEPTEMBER 2014_Dividing Squares into Triangles

Cool Math Essay_AUGUST 2014_TRIANGLES ON A QUADRATIC

Cool Math Essay_JULY 2014_AVERAGE FACTORIZATIONS

Cool Math Essay_June 2014_SHOELACE FORMULA

Cool Math Essay_May 2014_RepDigit Squares

Cool Math Essay_April 2014_On Cyclic Quadrilaterals

Cool Math Essay_March 2014_FRACTIONS TAKE NO SPACE

Cool Math Essay_February 2014_SEMIMAGIC SQUARES

Cool Math Essay_January 2014_THUE SEQUENCE

Cool Math Essay_December2013_LATTICE POLYGONS

Cool Math Essay_November2013_On Integer Triangles

Cool Math Essay_October2013_The Arbelos

Cool Math Essay_September 2013_ORDERING COLORED FRACTIONS

Cool Math Essay_June 2013: THOSE BRAIDS!

Cool Math Essay_May 2013: DIVISIBILITY

Cool Math Essay_April 2013: CUBIC and QUARTIC FORMULAS – and more!

Cool Math Essay_March 2013: COUNTING PARENTHESES

Cool Math Essay_February 2013: HOW ROUND IS A CUBE?

Cool Math Essay_January 2013: SUMS OF SQUARES, CUBES and BEYOND!

Cool Math Essay_December2012: GOING FURTHER WITH AVERAGES>

Cool Math Essay_April 2012: MEDIANTS AND FORD CIRCLES

Cool Math Essay_May2012: ASSOCIATIVITY AND COMMUTATIVITY PUZZLERS

Cool Math Essay_June2012: DRAGONS AND POISON

Cool Math Essay_July2012: ON AVERAGE

Cool Math Essay_August2012: CHECKERBOARD WALKING AND COLOURING

Cool Math Essay_September 2012: PASCAL “RING” TRIANGLE

Cool Math Essay_October2012: THE COUNTING NUMBERS AND BALANCED SUMS

Cool Math Essay_November2012: MORE SQUARE OR TRIANGULAR NUMBERS?