Teaching Subtraction on a Number Line
One technique for conveying mathematical concepts is the number line. A number line provides an excellent way to represent subtraction. Let’s start with addition as…
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Hidden Secrets in Math
What is Subtraction?
Subtraction should not be defined as “take away.” So, the question becomes: If subtraction is not take away, then what is it? The answer is…
Subtraction Does Not Mean “Take Away”
When subtraction is taught, it’s almost always explained as a process of “taking away” some number from another number. This has been a staple of…
What is a negative number?
This is a hard enough question in its own right, but it’s closely related to another really tough question. That other question is one that…