Lesson 5

Mr. Green's Giant Gumball Jamboree

Est. Class Sessions: 1–2
X

Mathematical Standards

3.OA.A
Represent and solve problems involving multiplication and division. (3.OA.A.1, 3.OA.A.2, 3.OA.A.3)
3.OA.B
Understand properties of multiplication and the relationship between multiplication and division. (3.OA.B.5)
3.OA.C
Multiply and divide within 100. (3.OA.C.7)
3.OA.D
Solve problems involving the four operations, and identify and explain patterns in arithmetic. (3.OA.D.9)

Standards for Mathematical Practice

MP1.
Make sense of problems and persevere in solving them.
MP2.
Reason quantitatively.
MP4.
Model with mathematics.
MP6.
Attend to precision.
MP7.
Look for and make sense of structure.

Students use a variety of strategies to solve multiplication and division problems involving the cost of a gumball. They represent the costs on tables and graphs and then use these tools to solve problems. Students then use both multiplicative reasoning strategies and these tools to compare their solutions and check for reasonableness.

Content in this Lesson

  • Solving problems involving money.
  • Identifying and extending multiplicative patterns in graphs and tables [E1].
  • Representing multiplicative patterns in graphs and tables [E2].
  • Multiplying and dividing using mental math strategies [E3].
  • Representing solution strategies for problems involving multiplication [E4].
  • Representing solution strategies for problems involving division including interpreting remainders [E5].
  • Making point graphs to model real-world situations [E6].
  • Reading a table or point graph to find information about a data set [E7].
  • Finding and communicating your solutions to a problem so that others can understand your thinking [MPE2, MPE5].
  • Checking your work for accuracy with a second method [MPE3].
  • Using labels to show what numbers mean [MPE6].

Daily Practice and Problems M–N

M. Multiplication Table

N. How Many Times More?

X

Materials for Students

Daily Practice and Problems Lesson Homework Assessment

Student Books

 Student Guide
Student Activity Book

Teacher Resources

 Teacher Guide - digital

Supplies for Students

ruler
calculator, optional

Materials for the Teacher

Display of Cost of Gumballs table from Buying Giant Gumballs (Student Activity Book) Page 393
Display of Cost of Gumballs graph from Buying Giant Gumballs (Student Activity Book) Page 397
Display of Math Practices page (Student Guide) Reference
Unit 10 Assessment Record
chart paper

Materials Preparation

Prepare Targeted Practice. Modify copies of the Buying Giant Gumballs pages in the Student Activity Book to provide targeted practice with the interconnected Expectations of this unit. Change the cost of Mr. Green's giant gumballs to meet student needs. For students who are “Working on It” change the cost to 10 cents each, for students who are “Getting It” change the cost to 30 cents, and for students who “Got It” change the cost to 25 cents. The questions and table can remain unchanged. Provide copies of the Centimeter Graph Paper Master. Targeted practice can be placed in a center, sent home, or completed in another setting.

Assessment in this Lesson

Assessment Expectation Assessed Math Practices Expectation Assessed

Buying Giant Gumballs
with Feedback Box
Student Activity Book
Pages 393–397
E1.
Identify and extend multiplicative patterns in graphs, tables, and number lines.
E2.
Represent multiplicative patterns in tables, graphs, and number lines.
E3.
Multiply and divide using mental math strategies (e.g., reasoning from known facts, repeated addition and subtraction).
E4.
Represent solution strategies for problems involving multiplication (e.g., models, drawings, number lines, tables, number sentences, and graphs).
E5.
Represent solution strategies for problems involving division including interpreting remainders (e.g., models, drawings, number lines, tables, number sentences, and graphs).
E6.
Make a point graph to model real-world situations.
E7.
Read a table or point graph to find information about a data set.
MPE2.
Find a strategy. I choose good tools and an efficient strategy for solving the problem.
MPE3.
Check for reasonableness. I look back at my solution to see if my answer makes sense. If it does not, I try again.
MPE5.
Show my work. I show or tell how I arrived at my answer so someone else can understand my thinking.
MPE6.
Use labels. I use labels to show what numbers mean.

Home Practice
Parts 4–5
Teacher Guide - digital
E2.
Represent multiplicative patterns in tables, graphs, and number lines.
E6.
Make a point graph to model real-world situations.
E7.
Read a table or point graph to find information about a data set.