- 2013 AIME 2 Problem 10
- Girls’ Angle Bulletin, Volume 7, Number 1
- Uncritical Thinking
- Hidden Math Crossword
- Girls’ Angle Bulletin, Volume 6, Number 6
- Why is the area under one hump of a sine curve exactly 2?
- Girls’ Angle Bulletin, Volume 6, Number 5
- A Counting Puzzle Raffle – Solution
- Girls’ Angle Bulletin, Volume 6, Number 4
- A Counting Puzzle Raffle
- The Pythagorean Theorem: Is It Proven?
- 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 MathAaron Lee AIME angles arctangent area CEO chocolate circles Coach Barb combinatorics complex numbers computation conformal Conic Sections coordinates crossword dates distance divisibility Emily Riehl errors exponentials Fermat's little theorem Gauss-Wilson geometry Girls' Angle Girls' Angle Bulletin girls and math infinite geometric series Jean Pedersen Julia Zimmerman learning linear algebra math math contests Math Doctor Bob mathematical aptitude mathematicians math event math games math magazine math prize for girls math problems math tips math trivia math videos matrices mental computation optimization origami parabolas perpendicular perspective drawing puzzle Pythagorean theorem Pythagorean triples quadratic Radmila Sazdanovic raffle contest roots science secret messages similarity sine stable marriage algorithm stable marriage problem sumit sums of powers tennis trigonometry USWIM variables Vieta's formulas volume Women's History Month
Monthly Archives: October 2011
The latest issue of the Girls’ Angle Bulletin has just been posted.
Recently, both Hewlett Packard and IBM named women as their Chief Executive Officers. To celebrate, here’s a puzzle for you. All I’ll say is that the puzzle was designed this past summer. (Part of the puzzle is to figure out … Continue reading
A few days ago, I presented some students with this problem from the 2003 AMC 10A (problem #5): Let and denote the solutions of . What is the value of ?
I sometimes get science educator envy. I watch them convey ideas with hatching chickadees, snapping plants, fiery explosions, counter-intuitive gyroscopic dances, color-changing liquids, erupting volcanoes, whirling water spouts, sizzling arcs, glistening gems,
Here’s a math problem for anyone who loves circles.
Tonight was the 4th annual Girls’ Angle Chocolate Soiree. Many thanks to the Department of Earth and Planetary Sciences at MIT for allowing us to use their beautiful ninth floor space to host the event. In addition to the chocolate … Continue reading
Timothy Gowers, the mathematician who compiled the incredible Princeton Companion to Mathematics, has begun a series of blog posts directed toward students who aspire to become mathematicians. It’s really quite amazing!
In Hana Kitasei and Tim Reckart’s animated video, Summer Vacation, Angela says that stereographic projection preserves angles. Here’s a proof.
Scramble the Angle in “Girls’ Angle,” add an “A,” and get a girl named Angela. That’s what Hana and Tim did to create Girls’ Angle’s first animated math mentor. She wears an “A” on her shirt, or is that a … Continue reading