Lesson 3

Workshop: Multiplication Methods

Est. Class Sessions: 1–2
X

Mathematics Standards

4.NBT.A
Generalize place value understanding for multi-digit whole numbers. (4.NBT.A.1, 4.NBT.A.2, 4.NBT.A.3)
4.NBT.B
Use place value understanding and properties of operations to perform multi-digit arithmetic. (4.NBT.B.5)

Standards for Mathematical Practice

MP2.
Reason quantitatively.
MP3.
Construct viable arguments and critique the reasoning of others.
MP5.
Use appropriate tools strategically.
MP6.
Attend to precision.
MP7.
Look for and make sense of structure.

Students practice solving multiplication problems involving 2-digit numbers. This Workshop allows students to choose from several problem sets and play a game to review multiplication concepts and practice multiplication methods.

Content in this Lesson

  • Demonstrating understanding of the place value concepts and mathematical properties involved in operations with multidigit numbers (e.g., use the distributive property to multiply) [E1].
  • Showing connections between models and strategies for multiplication (e.g., demonstrate partial products using a rectangle model for multiplication) [E2].
  • Multiplying by multiples of ten.
  • Estimating products of multidigit numbers [E3].
  • Multiplying 2-digit by 2-digit numbers using mental math strategies, and paper-and-pencil methods (e.g., expanded form, all partials) [E4].

Daily Practice and Problems I–J

I. Best Estimate

J. Archimedes' Puzzle

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 Each Student Pair

My Multiplication Menu created in Lesson 2
envelope to store Digit Cards 0–9

Materials for the Teacher

Display of Multidigit Multiplication Strategies Menu: Mental Math and Estimation Master (Teacher Guide)
Display of Multidigit Multiplication Strategies Menu: Paper-and-Pencil Methods Master (Teacher Guide)
Unit 11 Assessment Record

Materials Preparation

Digit Cards. Students will play the Multiplication Digits Game to practice estimation and apply place value concepts when finding the product of multidigit numbers. Have students cut apart copies of the Digit Cards 0–9 Masters. Store the cards in envelopes. Prepare one set for demonstration.

Assessment in this Lesson

Assessment Expectation Assessed
Workshop: Multiplication Methods
Self-Check: Questions 1–2
Student Guide
Page 498
E1.
Demonstrate understanding of the place value concepts and mathematical properties involved in multiplication of 2-digit by 2-digit numbers (e.g., use the distributive property to multiply).
Moving Ahead with Multiplication
Self-Check: Question 1
Student Activity Book
Page 481
E1.
Demonstrate understanding of the place value concepts and mathematical properties involved in multiplication of 2-digit by 2-digit numbers (e.g., use the distributive property to multiply).
E2.
Show connections between models and strategies for multiplying 2-digit by 2-digit numbers (e.g., demonstrate partial products using a rectangle model for multiplication).
Moving Ahead with Multiplication
Self-Check: Question 5
Student Activity Book
Page 485
E4.
Multiply 2-digit by 2-digit numbers using mental math strategies and paper-and-pencil methods (e.g., expanded form, all-partials).
Moving Ahead with Multiplication
Self-Check: Question 13
Student Activity Book
Page 488
E3.
Estimate products of multidigit numbers.
Moving Ahead with Multiplication
Self-Check: Question 23
Student Activity Book
Pages 492–493
E3.
Estimate products of multidigit numbers.
E4.
Multiply 2-digit by 2-digit numbers using mental math strategies and paper-and-pencil methods (e.g., expanded form, all-partials).