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Category Archives: number talks
Day 74: Conspiracy Theory
“Why do we need to know the greatest common factor and least common mulitple? When are we going to use it?” asks one of my 5th grade advanced students. My response. “Don’t you know about the hot dog and hot … Continue reading
Day 57: Discovering Divisibility
“Figure it out.” Words to live by. Words that govern my 5th grade advanced math class. So, “figure it out” was what my students had to do in this divisibility activity. By studying the numbers in each group, students had … Continue reading
Day 36: Extending the Sum
The school year always seems to start with a review of place value concepts and within a few weeks it’s on to basic operations. At that point, it seems like place value becomes a thing of the past. So why … Continue reading
Posted in classroom, lessons, number talks
Tagged addition, flexible, mental math, mental math strategies, place value
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Day 15: Number Talks: Student Sample
Based on our recent number talks, I asked my students to demonstrate how to calculate products by breaking factors into smaller factors. The student samples showed mastery of this particular mental math strategy. Aside from flexibility with the factors, the … Continue reading
Day 12: Number Talks
With tremendous thanks to the MTBoS and last night’s #msmathchat, I was prepared to battle my number sense frustrations. My weapon of choice: Number Talks. I had read Sherry Parrish’s book a couple of summers ago. Though I enjoyed it … Continue reading
Posted in classroom, lessons, number talks
Tagged number sense, prime factorization, strategies
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