Farmer Maslow's Area Model Multiplication Adventure

Mathematics Grades 4th Grade 2:40 Video
Print Lesson Plan Watch Video

Lesson Description

Learn how to multiply two-digit numbers using the area model strategy with Farmer Maslow and his green beans!

Video Resource

Area Model Multiplication Song | Multiplying with Partial Products

Math Songs by NUMBEROCK

Duration: 2:40
Watch on YouTube

Key Concepts

  • Area Model Multiplication
  • Partial Products
  • Place Value
  • Decomposition of Numbers

Learning Objectives

  • Students will be able to explain what the area model is.
  • Students will be able to decompose two-digit numbers into tens and ones.
  • Students will be able to use the area model to multiply two-digit numbers.
  • Students will be able to add partial products to find the final product.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students if they've ever planted anything. Discuss different ways farmers organize their crops. Introduce Farmer Maslow and explain that he uses math, specifically the area model, to plan his farm.
  • Video Viewing (5 mins)
    Play the "Area Model Multiplication Song | Multiplying with Partial Products" video. Encourage students to sway like Farmer Maslow!
  • Area Model Explanation (10 mins)
    Review the area model. Write a multiplication problem on the board (e.g., 23 x 15). Break down each number into its tens and ones (20 + 3) and (10 + 5). Draw a grid with four sections. Explain that each section will represent a partial product: 20 x 10, 20 x 5, 3 x 10, and 3 x 5.
  • Calculating Partial Products (10 mins)
    Guide students through calculating each partial product. Write each product in the corresponding section of the grid. Emphasize the importance of place value. 20 x 10 = 200; 20 x 5 = 100; 3 x 10 = 30; 3 x 5 = 15.
  • Adding Partial Products (5 mins)
    Explain that the final step is to add all the partial products together: 200 + 100 + 30 + 15 = 345. Therefore, 23 x 15 = 345.
  • Practice Problems (10 mins)
    Provide students with practice problems to solve using the area model. Circulate to provide support and answer questions. Examples: 14 x 15, 22 x 15 (as in the song).
  • Wrap Up (5 mins)
    Review the key concepts of the area model. Ask students to explain how the area model helps them understand multiplication. Remind them to check their work!

Interactive Exercises

  • Area Model Farm Design
    Have students design their own farms using the area model to plan their crops. For example, if they want 25 rows of 12 corn stalks, they can use the area model to calculate the total number of corn stalks they need.

Discussion Questions

  • What is the area model and how does it help us multiply?
  • Why is it important to break down numbers into tens and ones when using the area model?
  • How is the area model similar to or different from other multiplication strategies you've learned?

Skills Developed

  • Multiplication
  • Problem-solving
  • Visual Representation
  • Critical Thinking

Multiple Choice Questions

Question 1:

What is another name for area model multiplication?

Correct Answer: Partial Products Multiplication

Question 2:

In the video, who uses the area model to plant his crops?

Correct Answer: Farmer Maslow

Question 3:

When using the area model to multiply 23 x 14, what is 20 x 10?

Correct Answer: 200

Question 4:

Which of these is a partial product when using the area model to multiply 15 x 12?

Correct Answer: 10x10

Question 5:

What are the last names of the actors in this video?

Correct Answer: They are not actors

Question 6:

What kind of music does Farmer Maslow enjoy?

Correct Answer: Reggae

Question 7:

What is 10 x 5?

Correct Answer: 50

Question 8:

What is the first multiplication problem that the song covers?

Correct Answer: 14 x 15

Question 9:

What tool does Farmer Maslow use to do multiplication?

Correct Answer: Notepad and pen

Question 10:

When multiplying 2-digit numbers using the area model, how many boxes do you need in your grid?

Correct Answer: 4

Fill in the Blank Questions

Question 1:

The area model helps us split up numbers into smaller ____.

Correct Answer: chunks

Question 2:

In the area model, each cell in the grid represents a ____ product.

Correct Answer: partial

Question 3:

To use the area model you split the ____ values in multiplication.

Correct Answer: place

Question 4:

After finding all the partial products, you must ____ them to get the final answer.

Correct Answer: add

Question 5:

Farmer Maslow grows lots of delicious ____ ____ on his farm.

Correct Answer: green beans

Question 6:

Before you begin, be sure to ____ your work.

Correct Answer: check

Question 7:

In the song, Farmer Maslow is planting green beans in fourteen rows of ____.

Correct Answer: fifteen

Question 8:

Twenty-two rows of fifteen black beans is ____ beans.

Correct Answer: 330

Question 9:

Multiplying tens gets the ____.

Correct Answer: foundation

Question 10:

Farmer Maslow is fond of math, ____ beans, and Reggae music.

Correct Answer: green

Educational Standards

4.N.2.2:Multiply 3-digit by 1-digit and 2-digit by 2-digit whole numbers, using various strategies, including but not limited to standard algorithms. 4.N.2.4:Apply and analyze models to solve multi-step problems requiring the use of addition, subtraction, and multiplication of multi-digit whole numbers. Use various strategies, including the relationship between operations, the use of appropriate technology, and the context of the problem to assess the reasonableness of results.

Teaching Materials

Download ready-to-use materials for this lesson:

Student Worksheet Classroom Slides Assessment Quiz
Add to Google Classroom

User Actions

Sign in to save this lesson plan to your favorites.

Sign In

Share This Lesson

Related Lesson Plans