Why Do We Divide Fractions Like That?

One of the things we often do with math is have students memorize algorithms–which is fine! Good, even! Efficiency and automaticity matter, especially for students with low to average working memories. That is, most students, unlike people who majored in mathematics and then became math teachers, don’t have the mental “space” to derive the procedureContinue reading “Why Do We Divide Fractions Like That?”