Announcement: Mathematics Blog Carnival submission now on

Calling all mathematics and bloggers! Get your math posts published! Mathematics for Teaching will be hosting the 12th edition of the Math and Multimedia blog carnival which will go live on

What exactly is the square root of 36?

Mathematics is already a difficult subject so let us not make it more difficult to students to make sense of with the confusing rules we tell them. For example, we

Mistakes and Misconceptions in Mathematics

Misconceptions are very different from the mistakes students make. Mistakes are not consciously made. Misconceptions are. Mistakes are usually one-off, while misconceptions, the gods forbid, could be for keeps. Mistakes are

“New Math” curriculum

In the video below, Tom Lehrer ‘explains’ and ‘criticizes’ the New Math curriculum in a funny way. I think the New Math curriculum was not that bad really. It helped