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Category Archives: 35
3Act Task: A 5thgrade lesson captured
A while back I shared a kindergarten lesson and I was really happy with the way it turned out. The 5thgrade lesson below, not so much. The students did great but there are definitely some things I need to improve. We recently finished up … Continue reading
Posted in 35, 3Act Tasks, 68, Estimation, Fractions, Intellectual Need, Math Progressions, Modeling, Teacher Content
11 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
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
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 KeepChangeFlip or the saying “Yours is not the reason why, just invert and multiply.” Both are conceptual … Continue reading
I’m Placing a Hit on the PseudoContext
This robs students of everything mathematics should be… The “real world” connection The stepbystep procedure Circle the numbers you need to solve the problem The pseudocontext word problem. Lesson 19.2 infers that this unit is frontend load with procedures and formulas … Continue reading
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
The Postit Holds the Mystery Number
There’s no denying the power of the Postit. 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 35, Algebra, Making Math Accessible, Number Sense, Strategy Development
Tagged Algebra, Marilyn Burns, patterns
16 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
Get Your Model On: Modeling in the Elementary Grades
Dan Meyer’s work on mathematical modeling has been instrumental in shaping my own understanding. I’m super thankful for Dan’s commitment to SMP #4 over the years. So when he recently posted that he was shifting gears, I was bummed. It was like … Continue reading
Not Your Mom’s Flashcards: Conceptual Understanding of Multiplication
What’s the purpose of flashcards? There’s 2 answers I frequently hear and only one I agree with. Answer 1: help kids know/memorize their facts Answer 2: help students build fluency through the automatization of strategy I know how Tracy and many … Continue reading
Posted in 35, Estimation, Fact Fluency, Games, Math Tools, Number Sense
Tagged 3rd grade, fact fluency, flash cards, fluency, multiplication, Steve Wyborney
27 Comments