Teaching positive and negative numbers

A popular approach for teaching numbers is to use it to describe a property of an object or a set of object. For example, numbers are used to describe the

From whole numbers to integers – so many things to “unlearn”

A lot of online resources on integers are about operations on integers especially addition and subtraction.  Most of these resources  show visual representations of integer operations. These representations are almost

Math War over Multiplication

The post It  Ain’t No Repeated Addition by Devlin launched a math war over the definition of multiplication. Here’s an excerpt from that post: “Multiplication simply is not repeated addition, and

Assessing conceptual understanding of integers

Assessing students’ understanding of operations involving integers should not just include assessing their skill in adding, subtracting, multiplying and dividing integers. Equally important is their conceptual understanding of the process