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Unit 6 - Lesson 15 - Grade 3: Illustrative Mathematics

By Formative Library
Last updated 2 months ago
12 Questions
Note from the author:
Grade 3 Unit 6
Lesson 15: Ways to Solve Problems and Show Solutions
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 6
Lesson 15: Ways to Solve Problems and Show Solutions
CC BY 2021 Illustrative Mathematics®
Lesson: Ways to Solve Problems and Show Solutions

Number Talk: Divide by 8 (Warm Up)

Find the value of each expression mentally.
1.

2.

3.

4.

A Day at the Fair

You spent a day at the fair. Solve four problems about your day and create a poster to show your reasoning and solutions.
5.

You arrived at the fair!

Entry to the fair is $9 a person. You went there with 6 other people. How much did it cost your group to enter the fair?

6.

How did you start your day? (Choose one.)

You arrived at the giant pumpkin weigh-off at 11:12 a.m. and left at 12:25 p.m. How long were you there?

You spent 48 minutes at the carnival and left at 12:10 p.m. What time did you
get to the carnival?

7.

What was next? (Choose one.)

You visited a barn with 7 sheep. The sheep drink 91 liters of water a day, each sheep drinking about the same amount. How much does each sheep drink a day?

You visited a life-size sculpture of a cow made of butter. The butter cow weighs 273 kilograms, which is 277 kilograms less than the actual cow. How much does the actual cow weigh?

8.

Before you went home . . .

You stopped for some grilled corn on the cob. On the grill, there were 54 ears
of corn arranged in 9 equal rows. How many ears of corn were in each row?

9.

Create a poster to show your reasoning
and solutions.

A Day at the Fair Gallery Walk

10.

As you visit the posters with your partner:

Look for a problem that was solved using a strategy that is different from yours. What made it different? Describe the strategy.

11.

As you visit the posters with your partner:

Look for ways that your classmates made their thinking and the math work clear to you. Describe at least three things they did or showed on the posters.

Cool Down: Problem Solving Reflection
12.

Choose a prompt to respond to. Write a few sentences to reflect on problem solving.
  • The most important part of problem solving is to remember...
  • The most important thing to remember when solving problems like we did in this unit is...
  • The math in this unit reminded me of _____ from outside of school because...