Search Me

Recent Posts
 Girls’ Angle Bulletin, Volume 11, Number 1
 Girls’ Angle Bulletin, Volume 10, Number 6
 Happy YP Day, HCSSiM!
 Girls’ Angle Bulletin, Volume 10, Number 5
 Girls’ Angle Bulletin, Volume 10, Number 4
 Math Intuition Test
 Girls’ Angle Bulletin, Volume 10, Number 3
 Happy New Year 2017!
 Girls’ Angle Bulletin, Volume 10, Number 2
 Chebyshev Polynomials of the First Kind
 Potatoes are made of ducks
 Girls’ Angle Bulletin, Volume 10, Number 1
Categories
 applied math (3)
 Contest Math (24)
 gender issues (9)
 math (111)
 Math Education (91)
 Uncategorized (21)
 WIM videos (4)
Archives
 October 2017 (1)
 August 2017 (1)
 July 2017 (1)
 June 2017 (1)
 April 2017 (2)
 February 2017 (1)
 January 2017 (1)
 December 2016 (2)
 November 2016 (1)
 October 2016 (2)
 September 2016 (1)
 August 2016 (1)
 June 2016 (1)
 April 2016 (1)
 February 2016 (2)
 January 2016 (1)
 December 2015 (1)
 October 2015 (1)
 September 2015 (1)
 August 2015 (2)
 June 2015 (2)
 May 2015 (1)
 April 2015 (1)
 March 2015 (1)
 February 2015 (2)
 January 2015 (1)
 December 2014 (2)
 October 2014 (1)
 September 2014 (1)
 August 2014 (1)
 July 2014 (1)
 June 2014 (2)
 May 2014 (1)
 February 2014 (1)
 January 2014 (4)
 December 2013 (1)
 November 2013 (2)
 September 2013 (2)
 August 2013 (1)
 July 2013 (2)
 June 2013 (1)
 May 2013 (1)
 April 2013 (3)
 March 2013 (1)
 February 2013 (2)
 January 2013 (2)
 December 2012 (2)
 November 2012 (2)
 October 2012 (3)
 September 2012 (8)
 August 2012 (10)
 July 2012 (7)
 June 2012 (3)
 May 2012 (3)
 April 2012 (7)
 March 2012 (4)
 February 2012 (3)
 December 2011 (4)
 November 2011 (7)
 October 2011 (11)
 September 2011 (13)
 August 2011 (16)
Everything Math
 AIME
 angles
 arctangent
 area
 binomial coefficients
 calculus
 center of mass
 CEO
 Chebyshev polynomials
 chocolate
 circles
 combinatorics
 complex numbers
 conformal
 crossword
 cubes
 cyclotomic polynomials
 derivative
 Emily Riehl
 exponentials
 Fermat's little theorem
 finite fields
 geometry
 Girls' Angle
 Girls' Angle Bulletin
 girls and math
 infinite geometric series
 irreducible polynomials
 Jean Pedersen
 Julia Zimmerman
 Kate Jenkins
 learning
 linear algebra
 logic
 mass points
 math
 math contests
 Math Doctor Bob
 math event
 math games
 math magazine
 math prize for girls
 math problems
 math videos
 minimal polynomials
 multiplication
 optimization
 origami
 parabolas
 permutations
 perspective drawing
 probability
 pulled noodles
 puzzle
 Pythagorean theorem
 Pythagorean triples
 quadratic
 raffle contest
 roots
 science
 sets
 similarity
 sine
 stereographic projection
 sumit
 telescoping sum
 tennis
 tilings
 trapezoid
 triangles
 trigonometry
 USWIM
 variables
 Vieta's formulas
 volume
Monthly Archives: June 2012
Trig Decor
Who says trig is boring? Advertisements
Geometric Series to the Rescue!
On a recent road trip, the driver asked me to compute the car’s mileage per gallon. She handed me a little notebook with odometer readings and gasoline gallons at each fillerup. I guess when you run a math club for … Continue reading
Posted in math, Math Education
Tagged computation, gas mileage, infinite geometric series, mental computation
1 Comment
WIM Video: The Pigeonhole Principle
The latest in Elisenda Grigsby’s WIM Video series features Harvard graduate student and Girls’ Angle mentor Charmaine Sia. In it, she gives two applications of the pigeonhole principle: