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It’s where my ideas go to die.  But like the mighty phoenix, I have one idea for a task that keeps rising from the ashes. It just won’t die. If Bruce Willis was a math task, I’ve seen his face. I can’t help it. I’m fascinated by them. The...

## Making Sense of Invert and Multiply

As elementary teachers, we rarely have the opportunity to explore division of a fraction by a fraction.  When we do, it’s normally accompanied with Keep-Change-Flip or the saying “Yours is not the reason why, just invert and multiply.” Both are...

## The Progression of Division

Last month I posted The Progression of Multiplication hoping that a couple of friends and parents would find it helpful.  Well, here’s my stab at the progression of division.  I understand that there’s lots of ways to model division and this is only ONE of...

## The Progression of Multiplication

There’s a lot happening in elementary mathematics and it’s really tough for teachers to keep up with it all…let alone parents and administrators. I keep reminding myself that the turtle won the race. It’s my hope that in creating and sharing...

## More Bang for your Buck: The Power of the Estimation Station

Time IS NOT on our side! In a 1st grade planning session I was asked,”How do we fit it all in?”  I loved this question because it asked for a solution to problem we know exists. We collectively tackled this question and the fruits of our labor are as...

## K-1 Number Sense Trajectory

Before I travelled to NCTM I was finishing up some district PL with K-1 teachers. As part of the workshop, teachers were asked to engage in a Number Sense Trajectory Cut-N-Sort match header and descriptor place in the order that students learn number Easy enough...