In a recent blog post (see Developing Decimal Number Sense), we talked about decimal number sense, what it is and how to develop it in our students. Defining decimal number sense isn’t easy, but it...

“Yours is not to reason why, just invert and multiply!” Sound familiar? This is how many of us learned how to divide fractions, by using the “invert and multiply” algorithm. But did we really understand...

Before you read on, think about how you would respond if someone asked you what it means to have decimal number sense.  If you’re struggling, don’t worry, number sense is hard to define. According to...