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Unit 3 - Lesson 20 - Grade 3: Illustrative Mathematics
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Instructions
Lesson: More Practice to Represent and Solve
1
Cool Down: Reflection
1
Grade 3 Unit 3
Lesson 20: More Practice to Represent and Solve
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 3
Lesson 20: More Practice to Represent and Solve
CC BY 2021 Illustrative Mathematics®
Number Talk: Two Steps (Warm Up)
Find the value of each expression mentally.
1
Question 1
1.
20 + (2 x 3)
1
Question 2
2.
30 + (4 x 3)
1
Question 3
3.
50 + (8 x 3)
1
Info Gap: Introduction
Question 5
5.
Problem Card:
A room has some chairs set up in rows and some chairs stacked up in a corner.
How many chairs are in the room?
Info Gap: Bake Sale
Round 1
Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.
Problem Card Student:
Silently read the problem card.
Data Card Student:
Silently read the data card.
1
Round 2
Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.
Problem Card Student:
Silently read the problem card.
Data Card Student:
Silently read the data card.
1
Question 8
8.
Describe something you really understand well after today’s lesson or describe something that was confusing or challenging.
Question 4
4.
90 + (8 x 3)
Problem Card Student:
"Can you tell me______?" (Ask for a specific piece of information)
Data Card Student:
"Why do you need to know _____?" (Repeat the information requested)
Problem Card Student:
"I need to know _______ because _______."
Data Card Student:
Listen to your partner's reason. Answer with information from the data card.
Problem Card Student:
Continue asking questions until you can say, "I have enough information to solve this problem."
Display the problem card.
Question 6
6.
Solve the problem independently.
visibility
View drawing
Data Card Student:
Share Data Card, then compare strategies and solutions.
Pause here so your teacher can review your work.
Ask your teacher for a new set of cards and repeat the activity, trading roles with your partner.
Problem Card Student:
"Can you tell me______?" (Ask for a specific piece of information)
Data Card Student:
"Why do you need to know _____?" (Repeat the information requested)
Problem Card Student:
"I need to know _______ because _______."
Data Card Student:
Listen to your partner's reason. Answer with information from the data card.
Problem Card Student:
Continue asking questions until you can say, "I have enough information to solve this problem."
Display the problem card.
Question 7
7.
Solve the problem independently.
visibility
View drawing
Data Card Student:
Share Data Card, then compare strategies and solutions.
Pause here so your teacher can review your work.
Ask your teacher for a new set of cards and repeat the activity, trading roles with your partner.