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Mathematicians at Work

Mathematicians at Work . Lesson Study Day 3. ChaMPS for Math workshop. C- Accountable Talk (Whisper) H- Help Sign A- Math Workshop M- Restroom/Water P- 100% on Task. Balance Scale. http :// www.educational-freeware.com/images/virtual-manipulatives/manipulatives1.jpg. Learning Focus.

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Mathematicians at Work

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  1. Mathematicians at Work Lesson Study Day 3

  2. ChaMPS for Math workshop • C- Accountable Talk (Whisper) • H- Help Sign • A- Math Workshop • M- Restroom/Water • P- 100% on Task

  3. Balance Scale • http://www.educational-freeware.com/images/virtual-manipulatives/manipulatives1.jpg

  4. Learning Focus • Essential Question: How can we correctly solve to find the unknown whole number in an equation relating four or more whole numbers? • MAFS.1.OA.4.8 Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = [ ] – 3, 6 + 6 = [ ]

  5. Quick Review 23 = 13+10 or 22+14 =

  6. Guided Practice 17 + 10 = ? + 6 What do you notice about this equation? Ones? Tens? Remember the equal sign means balanced:

  7. Guided Practice continued • Let’s continue to solve for the unknown (remember before we solve – we need to build each addend) ( Build equation) • 5 + 14= ? + 12 • 7+ 11 = ? + 13

  8. Math Partners

  9. Partner/Independent work Complete the following equations in your math journal. Be sure to write each equation, build/illustration tens and ones and write how you solve(what strategies did you use) • 12 + 6 = ? + 7 2. 9 + 18 = 14 + ?

  10. Sharing/Closing • Sharing (Choose Volunteers) • Essential question How can we correctly solve to find the unknown whole number in an equation relating four or more whole numbers? • Post-test • Any Questions?

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