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 Girls’ Angle Bulletin, Volume 14, Number 5
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Tag Archives: circles
Girls’ Angle Bulletin, Volume 12, Number 2
The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. We open with the second part of a multipart interview with mathematician Dr. Kristin Lauter, a professor at the University of Washington and … Continue reading
Girls’ Angle Bulletin, Volume 12, Number 1
The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. Through the years, Dr. Kristin Lauter and Microsoft Research have been major financial supporters of Girls’ Angle, especially, our Math Collaboration initiative. … Continue reading
Posted in math, Math Education
Tagged cardinality, circles, compressed sensing, Deanna Needell, geometry, greatest common factor, harmonic progressions, hyperoctahedra, Ke Huang, Kristin Lauter, least common multiple, Michael Kleistra, Milena Harned, Miriam Rittenberg, Peter Park, umbrellas, unit vectors
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Girls’ Angle Bulletin, Volume 11, Number 4
The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. Betsy Stovall, assistant professor of mathematics at the University of WisconsinMadison, kicks off Volume 11, Number 4 with a wonderful interview. Her … Continue reading
Conceptual Solution to 2008 AIME I, Problem 14
Here’s a solution to problem 14 on the 2008 AIME I contest that attempts to avoid computation as much as possible. Sometimes, it’s an amusing exercise to try to solve a contest problem entirely in your head. Doing so often forces … Continue reading
Posted in Contest Math, math
Tagged AIME, circles, ellipse, geometry, optimization, tangent
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Why is the area under one hump of a sine curve exactly 2?
I was talking with a student recently who told me that he always found the fact that amazing. “How is it that the area under one hump of the sine curve comes out exactly 2?” He asked me if there is … Continue reading
Use Your Mind to Save Yourself Time
I’m looking forward to Games Night at the Math Prize for Girls coming up this weekend. I’ve been working with the author of “Mess or Math?” to create a really fun math activity and I hope many of you who … Continue reading
Posted in Contest Math, math, Math Education
Tagged AMC 12, circles, circumference, geometry, similarity, tangent circles
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A Problem For Circle Lovers
Here’s a math problem for anyone who loves circles.
Circles, Squares, and Parabolas
If you take two circles, you can position them before your right eye in such a way that one will perfectly overlap the other. In other words, a circle is geometrically similar to all other circles. The same is true … Continue reading