Log inSign up for FREE
Library

Unit 3 - Lesson 20 - Grade 3: Illustrative Mathematics

By Formative Library
Last updated 7 months ago
8 questions
Note from the author:
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®
Lesson: More Practice to Represent and Solve

Number Talk: Two Steps (Warm Up)

Find the value of each expression mentally.

20 + (2 x 3)

30 + (4 x 3)

50 + (8 x 3)

90 + (8 x 3)

Info Gap: Introduction

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.
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.

Solve the problem independently.

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.

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.
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.

Solve the problem independently.

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.
Cool Down: Reflection

Describe something you really understand well after today’s lesson or describe something that was confusing or challenging.