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Unit 3 - Lesson 18 - Grade 3: Illustrative Mathematics
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Instructions
Lesson: Diagrams and Equations for Word Problems
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Cool Down: Equation Match
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Grade 3 Unit 3
Lesson 18: Diagrams and Equations for Word Problems
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 18: Diagrams and Equations for Word Problems
CC BY 2021 Illustrative Mathematics®
Notice and Wonder: Diagrams (Warm Up)
1
Question 1
1.
What do you notice?
1
Question 2
2.
What do you wonder?
Card Sort: Situations, Equations, and Diagrams
Your teacher will give you a set of cards showing situations, equations, and diagrams.
Sort the cards into groups so that the cards in each group represent the same situation. Be ready to explain your reasoning.
Question 3
3.
Explain your reasoning for sorting the cards.
Makes Sense to Me: A Gallery Walk
Your teacher will assign a problem to your group. Work together to solve your assigned problem.
Question 4
4.
Create a poster of your group’s solution. Organize your work so that it can be followed by others.
visibility
View drawing
As you visit other groups' posters, consider how each answer makes sense.
Question 5
5.
Choose one poster and make a comment on the solution. Write how you know the answer makes sense.
Question 6
6.
Andre had 451 beads. 125 beads were blue. 223 beads were pink. The rest of the beads were yellow. How many beads were yellow?
Which equation matches this situation?
451 + 125 + 223 = ?
? + 125 + 223 = 451
? = 451 + 125 - 223
Question 7
7.
Explain your reasoning.