A Small Open Math Project

The other week, a student posted on /r/math that they made a summary of multivariable calculus. As they point out, it’s an 80-page summary, but at least it’s shorter than the textbook it followed.

The student admitted they’d used Google Docs, as opposed to LaTeX, to make these notes, and the images they used were just taken from the internet. As a result, a Github project was opened up for people to turn it into LaTeX, and I’ve taken it upon myself to slowly recreate the figures using Asymptote.

They will be added to a Dropbox folder as I make them. It’s been a fun idle project, and I’m happy to make small contributions like this. It just further confirms that I seem to be in the correct industry.

Algorithmic Thinking and Metacognition

I’m teaching a math camp for students entering 6th grade. It’s my first time being the teacher of record for a course, and luckily it only took a few minutes for my anxiety to subside. It’s a small group – only 9 kids – so it reminds me of my days being a camp counselor, except now it’s talking about math with very advanced kids for 3 hours a day. It’s been a blast.

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Triangle Inequality for Altitudes

I’ve written a short post on the triangle inequality for altitudes. As usual, I put it over on the math blog I have with my company, just because the support for literally everything is much nicer.

But, in the off chance you want it, I have a PDF. I’ve played around with a wonderful program called Typora, which I’ve been using for a few months to write any blog posts when I’m not in my iPad. It has great Mathjax support (miles better than WordPress), and so it’s easy to switch between the blog I use and this program, and I can export cleanly to PDF, as well as EPub and other formats that are really difficult to work with if I were using straight up LaTeX.

TriangleInequalityforAltitudes

Are You Ready?

Assessments are a tricky business. Writing an exam that successfully tests a person’s knowledge or abilities, without inadvertently giving preference or advantage to certain demographics, is very difficult. The examinations I’ve written so far for my job fall into the category of testing whether a student has mastered a certain curriculum. After a couple of months of class, we give them an exam to check if they learned all that they were supposed to. Everybody is used to such tests, and everybody has experienced them.

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A Few Math Games and Puzzles

Up front, here is a link to my math blog that has the meat of this post. Also, there will be a PDF version attached.

I’ve finally gotten around to writing another math post. There’s a mix of reasons why I’ve been writing about a lot of other things. First, there have just been other topics in the front of my mind that I felt like writing about in the moment. Second, there were not any particular pieces of math I felt inspired to write about. And third, preparation of a math post is significantly more work for me, as I care a lot about being accurate, precise, and clear in my presentation.

My goal is always to write posts that are accessible and reflect my thoughts, but in most circumstances it’s simply a matter of opinion. Writing a good math post is a bit more convoluted, as there are definitive wrong ways to go about it. So, I’ve written the post up on my math blog I made through work. Again, that link is above. I’ve also attached a PDF version of the post. It’s about some mathematical games, so if you are someone who teaches or tutors math, knows someone who does, or just wants some easy pencil-and-paper games to play with a friend to pass the time, you can keep this PDF somewhere more accessible.

That’s a Bad Pirson

I was on one of my favorite subreddits today, /r/learnmath (of course I sort by New), and a question came up that ultimately came down to understanding order of operations. These always frustrate me because they stem from a poor understanding of how the order of operations work; furthermore, any problem involving order of operations can be fixed and cleared up with an additional set of parentheses.

Consider this math problem below — the type I see making its way around Facebook.

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