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Category Archives: Fractions
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
14 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
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
A number line, number string, and Number Talk walk into a class…
As teachers and students ramp up for testing I was invited to visit a 5th grade class and asked to focus on fractions. Before the lesson, the teacher and I discussed the importance of a number line, which was an extension of … Continue reading
Posted in 35, Estimation, Fractions, Making Math Accessible, Math Tools, Number Sense, SMPs, Strategy Development
Tagged fractions, number lines, Number Talks
6 Comments
Difficult Tasks Allow Misconceptions to Shine
Last week I was reminded why I love being a teacher. I’m currently throwing down a PL gauntlet in my district for all our elementary and middle school teachers. For each grade level I’ve focused on 1 or 2 of the big … Continue reading
More than one way to skin a task!
I tried “the Big Pad” with a 4th grade class and my anticipation of possible solutions was way off!!! I mean, c’mon Graham, think outside the box. Our students attacked this problem in more ways than a charter bus filled with senior citizens attacks an … Continue reading
Posted in Fractions, Making Math Accessible, Math Tools, Modeling, Patient Problem Solving, SMPs
Tagged 3act task, 4th grade, manipulatives, Mathematical Practice, modeling, postits, SMP
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The Manipulative Trap
I’ve spent the past month visiting classrooms, reading blogs, attending workshops, sitting in grade level meetings and I’ve noticed a common theme which is concerning. Before I continue I want to acknowledge that the use, and proposed use, of manipulatives is rampant and … Continue reading
Posted in Fractions, Making Math Accessible, Math Tools, Teacher Content
10 Comments
Dividing Fractions Using Repeated Subtraction
I was talking with a group of 5th grade students today… Me: You know that next year you’ll need to be able to divide a fraction by a fraction and not just a fraction by a whole number? (MCC6.NS.1) Student: … Continue reading
Posted in Fractions, Word Problems
5 Comments