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Week 6

*sign in! (are you here?). Week 6. What’s wrong? 49 • 12 49 + 1 is 50, so do 50 • 12, which is 600, and then minus 1, and get 599. Agenda. Grades on D2L (attendance to be included soon) Finish Exploration 3.13 Class Notes Videos Area models Assign homework (already online).

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Week 6

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  1. *sign in! (are you here?) Week 6 What’s wrong? 49 • 12 49 + 1 is 50, so do 50 • 12, which is 600, and then minus 1, and get 599.

  2. Agenda • Grades on D2L (attendance to be included soon) • Finish Exploration 3.13 • Class Notes • Videos • Area models • Assign homework (already online)

  3. Exploration 3.13 • Cross Product. • Read this with your partner three times. • Now, do it together. 5 6x 4 8 8 • 6 = 4 tens 8 ones8 • 50 = 40 tens = 4 hundreds40 • 6 = 24 tens = 2 hundreds 4 tens40 • 50 = 20 hundreds = 2 thousands

  4. Exploration 3.13 • Think of 56 • 48 as (50 + 6)(40 + 8), and reread the directions. Can you follow it better? • In algebra, we learned to multiply binomials: (x + a)(y + b) = xy + xb + ay + ab. (FOIL). Do you see it now???

  5. Children’s Thinking Activity 1 • 1A. Do you see 5 boxes each with 7 turtles?

  6. Children’s Thinking Activity 1 • 1B. Do you see 5, 10, 15, 20, 25, and then 10 more?

  7. Children’s Thinking Activity 1 • 1C. • Can you see 5 • 5 + 2 • 5?

  8. Children’s Thinking Activity 1 • 2A. Do you see 12 bags with 6 candies in each?

  9. Children’s Thinking Activity 1 • 2B. Do you see 10 bags, with 60, and then 2 more bags 2 • 6 = 12?

  10. Children’s Thinking Activity 1 • 2C • Can you see 10 • 6 + 2 • 6?

  11. What skills and concepts did these students know? • BASIC MULTIPLICATION FACTS! • And… (can you give examples for each)

  12. Ryshawn • Describe how Ryshawn reorganized the quantities to solve the problem.

  13. Jemea • Describe how Jemea reorganized the quantities to solve the problem.

  14. Nicholas • Describe how Nicholas reorganized the quantities to solve the problem.

  15. Thomas • Describe how Thomas reorganized the quantities to solve the problem. • We will watch this video (at least) two times. • The first time just watch. • The second time, try writing down what he says.

  16. Homework • By Friday you should be finished with Children’s Thinking Activity 2 (p. 5 – 9 in class notes)

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