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October 21 st , 2013

October 21 st , 2013. Go Math Lesson 2.2. Common Core Learning Standard.

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October 21 st , 2013

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  1. October 21st, 2013

  2. Go MathLesson 2.2

  3. Common Core Learning Standard • Use the four operations with whole numbers to solve problems. CC.4.OA.2 Multiply or divide to solve word problems involving multiplicative comparisons, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparisons.

  4. I Can… Distinguish multiplicative comparison from additive comparisons by using drawings and equations with a symbol for the unknown number to represent the problem

  5. Essential Question • How does a model help you solve a comparison model?

  6. 1,278 Let’s Review • 1,243 Ms. Flores had 430 pennies. Daniel has 265 pennies. How many more pennies does Ms. Flores have then Daniel? Bar Model: Comparison Ms. Flores Daniel

  7. Multiplicative Comparison In multiplicative comparison, one quantity is a certain number of times as much or times as many as another quantity. Example: Mr. Steve and Ms. Cano were given 100 pencils to hand out to their 4th grade classes. Ms. Cano has 3 times as many pencils as Mr. Steve. How many pencils does Mr. Steve have? Bonus: How many pencils does Ms. Cano’s class have? n Steve 100 Pencils There are 4 parts. The parts together equal 100. n n n Cano 1 times more 2 times more 3 times more 4 x n = 100 Solve for n

  8. Give it a Try! There are 30 dogs. There are 4 times as many boxers as spaniels. How many spaniels are there?

  9. Go Math Work on page 49. When you are done, turn and talk with your partner to discuss your answers. When you are done, work independently on pages 50-52

  10. Checking for Understanding. Did I Get it? Work on page 49 with a partner. Then, work independently on pages 50-52. Raise your hand when you are done. GO MATH. On Your Own Pg. 53-54 ________________________________________________________________________________________________________________________________ RTI Tier 1 Following Students Only ______________________________________________________________________________________________________________________________________________________

  11. Summary Write a problem involving how much more than and solve it. Explain how drawing a diagram helped you solve the problem.

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