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Unit 6 - Lesson 15 - Grade 3: Illustrative Mathematics

By Formative Library
Last updated 3 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.

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.

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?

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?

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?

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?

Create a poster to show your reasoning
and solutions.

A Day at the Fair Gallery Walk

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.

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

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...