Category Archives: Strategy Development

The Progression of Early Number and Counting

If you’re not a pre-k, kindergarten, or 1st-grade teacher, you need to find one and give them a hug after watching this video.  They do the work of an army and many times their work goes unnoticed. There’s so much happening … Continue reading

Posted in Against the Norm, counting, K-2, Making Math Accessible, Making Sense Series, Math Progressions, Number Sense, Strategy Development, Teacher Content | 16 Comments

I’ll Rip Your Face Off: The Art of Defacing Manipulatives

It’s our fault. We have no one to blame but ourselves. We unknowing pigeonhole student thinking with the manipulatives we use. Take fraction tiles for example. Much to my disappointment, they come with labels and it kills me. Manipulatives that … Continue reading

Posted in 3-5, 6-8, Against the Norm, Fractions, Making Math Accessible, Making Sense Series, Math Progressions, Math Tools, Strategy Development, Teacher Content | 24 Comments

Geometric Subitizing: A Different Kind of Number Talk

These Geometric Subitizing Cards have been in beta the past two years. I asked our buddy Joe Schwartz to take them for a test drive last spring and he reported back.  Joe’s all in. How do they work?  Let’s play… Last week I took them for … Continue reading

Posted in 3-5, Against the Norm, Algebra, counting, Fact Fluency, Making Math Accessible, Math Tools, Number Sense, Strategy Development | 26 Comments

Conservation: The more things change, the more they stay the same

Every once in a while I stumble across Piaget’s 7 Conservation Tasks and then I move on. This week was different because my thoughts around conservation won’t go away. In a recent meeting with kindergarten and 1st grade teachers we discussed the importance of students being able to … Continue reading

Posted in counting, Estimation, K-2, Making Math Accessible, Strategy Development, Teacher Content, Teaching in a Context | Tagged , , , | 5 Comments

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 conceptual … Continue reading

Posted in 3-5, 6-8, Against the Norm, Fractions, Making Sense Series, Math Progressions, Number Sense, Planning, Strategy Development | Tagged , , , , , , | 12 Comments

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 … Continue reading

Posted in 3-5, 6-8, Against the Norm, Making Math Accessible, Making Sense Series, Math Progressions, Math Tools, Number Sense, Planning, Strategy Development, Teacher Content | Tagged , , , , | 42 Comments

The Post-it Holds the Mystery Number

There’s no denying the power of the Post-it.  Many brilliant minds within the #MTBoS have harnessed its’ power to help students make sense of mathematics and this week was no different. Only this time we infused them into a Marilyn Burns must have… … Continue reading

Posted in 3-5, Algebra, Making Math Accessible, Number Sense, Strategy Development | Tagged , , | 16 Comments

Take it to the Bank

It’s never been a secret that Superman fears Kryptonite. But I think the same can be said for many 2nd grade teachers and the way they feel about teaching money. There’s no way around it…teaching money to students is hard.  With … Continue reading

Posted in K-2, Making Math Accessible, Math Tools, Measurement and Data, Number Sense, Strategy Development, Teacher Content | 12 Comments

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 … Continue reading

Posted in 3-5, Estimation, Making Math Accessible, Making Sense Series, Math Progressions, Math Tools, Number Sense, Planning, Strategy Development, Teacher Content | Tagged | 61 Comments

The Sounds of Imaging Numbers

One of the most difficult standards for 1st grade students to own is the idea of adding or subtracting multiples of tens OR a group of ones.  Without it…all other numbers fall apart. (1.NBT.4-6) Karen is a phenomenal 1st grade teacher.  Being new to the … Continue reading

Posted in counting, Strategy Development, Teacher Content | Tagged , , , | 24 Comments