Search Me

Recent Posts
 Girls’ Angle Bulletin, Volume 13, Number 1
 Why the Girls’ Angle Bulletin?
 Girls’ Angle Bulletin, Volume 12, Number 6
 Girls’ Angle Bulletin, Volume 12, Number 5
 Girls’ Angle Bulletin, Volume 12, Number 4
 A Student’s Perspective on a Math Collaboration
 Girls’ Angle Bulletin, Volume 13, Number 3
 Happy New Year 2019!
 Girls’ Angle Bulletin, Volume 12, Number 2
 Girls’ Angle Bulletin, Volume 12, Number 1
 Head Mentoring at Girls’ Angle
 Girls’ Angle Bulletin, Volume 11, Number 6
Categories
 applied math (4)
 Contest Math (24)
 gender issues (9)
 math (126)
 Math Education (104)
 Uncategorized (24)
 WIM videos (4)
Archives
 October 2019 (2)
 August 2019 (1)
 June 2019 (1)
 May 2019 (1)
 March 2019 (1)
 February 2019 (1)
 January 2019 (1)
 December 2018 (1)
 October 2018 (1)
 September 2018 (1)
 August 2018 (1)
 June 2018 (1)
 April 2018 (1)
 February 2018 (1)
 January 2018 (1)
 December 2017 (1)
 November 2017 (1)
 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
 area
 binomial coefficients
 calculus
 center of mass
 Chebyshev polynomials
 chocolate
 circles
 combinatorics
 complex numbers
 conformal
 crossword
 cyclotomic polynomials
 Deanna Needell
 derivative
 Emily Riehl
 exponentials
 Fermat's little theorem
 Fibonacci
 finite fields
 geometry
 Girls' Angle
 Girls' Angle Bulletin
 induction
 irreducible polynomials
 Jean Pedersen
 Julia Zimmerman
 Kate Jenkins
 Kristin Lauter
 Laura Pierson
 linear algebra
 logarithms
 mass points
 math
 math contests
 Math Doctor Bob
 math event
 math games
 math magazine
 math prize for girls
 math problems
 math videos
 matrices
 Matthew de CourcyIreland
 minimal polynomials
 multiplication
 optimization
 origami
 parabolas
 Pascal's triangle
 permutations
 perspective drawing
 probability
 puzzle
 Pythagorean theorem
 Pythagorean triples
 raffle contest
 roots
 sets
 similarity
 sine
 spheres
 stable marriage problem
 sumit
 telescoping sum
 tennis
 tessellations
 tilings
 triangles
 trigonometry
 variables
 volume
 Whitney Souery
 zigzags
Monthly Archives: September 2011
WIM Video: The Platonic Solids by Emily Peters
Here’s the latest WIM video, featuring MIT postdoctoral fellow Emily Peters discussing the Platonic Solids.
Posted in math, Math Education, WIM videos
Tagged Euler's formula, geometry, math videos, Platonic solids
Leave a comment
Feeling Functions in Your Bones: Arctangent
We have a lot of intuition about the things we do every day. If a mathematical function describes one of these habits, all that intuition applies to understanding the mathematics. Imagine standing at the edge of a road. Perhaps you’re … Continue reading
Posted in math, Math Education
Tagged arctangent, mathematical intuition, trigonometry
Leave a comment
There’s More to Learning Math than Mathematical Aptitude
Ever since I founded Girls’ Angle, I’ve had frequent discussions about gender segregated math education. Here’s an argument I often hear from those opposed: “I believe girls and boys are equally capable at doing mathematics, and, therefore, they should not … Continue reading
Posted in gender issues, Math Education
Tagged girls and math, Girls' Angle, mathematical aptitude
2 Comments
Math and MEMS: More Exponentials
Yesterday, Allyson Hartzell, the Director of Failure Analysis, Test, and Reliability at Pixtronix, Inc., visited Girls’ Angle to tell us about how she uses math in her work. She works with Microelectricomechanical Systems, or MEMS. MEMS are tiny machines. They … Continue reading
Exponential Growth is REALLY Powerful!
Internet traffic, the Richter scale for measuring earthquakes, the spread of disease, our response to brightness, and Intel cofounder Gordon Moore’s Law all involve exponential growth. Exponential growth even applies to noodle making, as I’ll detail below! With all these … Continue reading
Does 0.999… Really Equal 1?
One of the most oftasked questions in K12 math is: Does zero point nine repeating really equal one? Here’s the short answer: Yes! And here’s a longer answer,
Posted in math, Math Education
Tagged 0.9 repeating, decimals, infinite geometric series, limits
Leave a comment
Calculating the Volume of a Regular Tetrahedron
Tonight I joined in on the fun at the Games Night at Math Prize for Girls. Picture a large banquet hall filled with large tables each showcasing a different kind of mathrelated handson activity. Girls came from all over the … Continue reading