Category Archives: teaching

Book review: Lauren Ipsum

Lauren Ipsumstory by Carlos Bueno; illustrations by Ytaelena López I don’t quite remember how I first stumbled across the website for this little gem of a book, billing itself as “a story about computer science and other improbable things”. But … Continue reading

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Introduction to Mathematical Thinking

Keith Devlin is going to be offering another instance of his online course, Introduction to Mathematical Thinking, starting on March 4. The idea is to serve as a bridge between high school mathematics— which focuses on solving specific types of … Continue reading

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Introduction to Mathematical Thinking with Keith Devlin

I just learned from Denise at Let’s Play Math! that Keith Devlin is going to be teaching a course on Coursera called Introduction to Mathematical Thinking. It’s free and open to anyone with only a background in high school math. … Continue reading

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Penn Alexander math club: map coloring

Today in math club I had the students explore map coloring. I tried to leave it as open-ended as possible to start—I just said that we were going to draw maps with countries, and try to give each country a … Continue reading

Posted in geometry, pattern, puzzles, teaching | Tagged , , , | 4 Comments

MangaHigh.com

I recently received an email suggesting that I check out the website MangaHigh.com, which has interactive math-based games for elementary through high school students. Now, I am generally pretty skeptical of such things. For one, they are usually of relatively … Continue reading

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The haybaler

At Penn Alexander’s math club yesterday, the students worked on a fun puzzle that I’d never seen before. It goes like this: You have five bales of hay. For some reason, instead of being weighed individually, they were weighed in … Continue reading

Posted in arithmetic, challenges, logic, puzzles, teaching | Tagged , , | 11 Comments

Who Am I?

An excellent puzzle from JD2718: There are five true and five false statements about the secret number. Each pair of statements contains one true and one false statement. Find the trues, find the falses, and find the number. 1a. I … Continue reading

Posted in challenges, logic, number theory, puzzles, teaching | Tagged , , | 13 Comments

Number bracelets

Recently I’ve been volunteering with the middle school math club at Penn Alexander, a PreK-8 school in my neighborhood. Today we did (among other things) a fun activity I’d never seen before, called “number bracelets”. The students seemed to enjoy … Continue reading

Posted in arithmetic, iteration, pattern, sequences, teaching | Tagged , , , | 12 Comments

Teaching precalculus in 2008-2009

This year I will be teaching precalculus via correspondence to two homeschool students. Don’t ask how this happened, it’s a long story, but I’m excited! It will be fun for me to gain more experience teaching and writing, and to … Continue reading

Posted in links, meta, teaching | Tagged , , , , | 6 Comments