The latest teaching tidbit is ready: finding the greatest common factor of two number using subtraction. New topics can be requested and old topics can be found through the Bureau 42 Teaches sidebar.

# math

## Teaching Tidbit: Subtract Your Way to Greatest Common Factors

June 18, 2010 by W. Blaine Dowler education, math Bureau 42 Teaches

## Teaching Tidbit: Calculating Logarithms by Hand

June 15, 2010 by W. Blaine Dowler education, math Bureau 42 Teaches

This is our second topic by e-mail request. I also plan to post a method for determining the greatest common factor of two numbers using only subtraction as an operation shortly. You can learn to calculate logarithms by hand here. Also, check out the sidebar on the right for the new “Bureau 42 Teaches” link compilation page.

## Teaching Tidbit: Calculating Square Roots by Hand

June 10, 2010 by W. Blaine Dowler education, math Bureau 42 Teaches

This topic chosen to satisfy an e-mail request. It is entirely possible to calculate square roots without the aid of an electronic or mechanical device more advanced than a pencil. More on this, and about choosing content, frequency, and presentation of these lessons comes after the break.

## Teaching Tidbit: Learn to Convert Repeating Decimals into Fractions

June 8, 2010 by W. Blaine Dowler education, math Bureau 42 Teaches

This summer we’ll see Bureau 42’s first summer school session, which covers graduate level quantum physics with grade school math. I had a blast writing it, and will probably write more educational columns in math, physics, and more. (Summer school topics have already been chosen through 2015, featuring contributions from multiple site authors.) Well, not all topics warrant the full summer course treatment, and cover only single lessons at a time. Those will be posted at random intervals right here. Here’s the first topic: turning repeating decimals into fractions. The algorithm can be followed and applied by just about anybody, though the explanation will be easier to deal with if you’re comfortable with high school math. I am also willing to take requests if there’s something you want to learn. I’m not omniscient, but if it’s math and/or physics, I can probably manage it.

## Textbook Review – “An Introduction To Laplace Transforms and Fourier Series”

September 17, 2007 by W. Blaine Dowler math Science

Just in case my geek status was in any doubt, I’ve written a review of the textbook I read while vacationing in Jasper, Alberta.

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## Textbook Review – “How to Read and Do Proofs”

August 19, 2006 by W. Blaine Dowler math Books

Here’s a review of a math text covering a vital area of mathematics that rarely receives a course in itself.

## Textbook review – “Linear Algebra Done Right”

February 18, 2006 by W. Blaine Dowler math Books

With a title like this, you know that it’s either fantastic, or so pompous that it’s about to get thrashed. Read on to find out which it is.

## Textbook review – “All the Mathematics You Missed (But Need to Know for Graduate School)”

January 31, 2006 by W. Blaine Dowler math Science

Big title, big subject area, surprisingly small book. If you’re even a little bit tempted, you should pick up a copy.

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## Textbook Review – “Axiomatic Set Theory”

June 12, 2004 by W. Blaine Dowler math Science

Here’s one of those science-based textbook reviews that will pop up once in a while.

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## Math Tidbit – Proving the Pythagorean Theorem

July 1, 2010 by W. Blaine Dowler education, math Bureau 42 Teaches

As of this article, the “teaching tidbits” are now being marked by subject right in the subject line. This will be the last tidbit before our first summer school semester starts on Monday, covering graduate level quantum mechanics with grade school math. In the meantime, enjoy one proof of the Pythagorean Theorem.