Identifying Models for Multiplying Fractions

This video tutorial teaches how to multiply fractions using visual models. It begins with an introduction to the concept, followed by a detailed explanation of identifying the product in a fraction model. The lesson then covers how to separate a model into rows and columns to find the factors. Two example problems are provided, demonstrating the process step-by-step, including simplification of the product. The lesson concludes with a summary of the key points covered.

What is the first step in converting a visual model into a mathematical problem?

• Count the shaded areas

• Identify the total number of boxes

• Write the product first

• Separate the image into rows and columns

Tags

CCSS.4.NBT.B.5

How do you determine the numerator for the product in a fraction multiplication model?

• Add the shaded rows and columns

• Count the total number of boxes

• Multiply the rows and columns

• Identify boxes with dual shading

Tags

CCSS.5.NF.B.4B

What represents the denominator in the first factor when analyzing rows?

• Number of shaded columns

• Total number of rows

• Total number of columns

• Total number of shaded rows

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

How many rows are shaded in the given model?

• Two

• One

• Three

• Four

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What does each column represent in the analysis of the second factor?

• A factor

• A denominator

• A product

• A numerator

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

How many columns are shaded in the model?

• Two

• Four

• Three

• One

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the final equation formed from the model?

• 1/3 * 1/6 = 1/18

• 1/2 * 1/2 = 1/4

• 1/5 * 1/4 = 1/20

• 1/4 * 1/5 = 1/20

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

How do you simplify the fraction 6/15?

• Add 3

• Multiply by 2

• Divide by 5

• Divide by 3

What is the simplified form of 6/15?

• 2/5

• 1/3

• 1/2

• 3/5

What method is used to write a problem from a model?

• Multiply rows by columns directly

• Add all shaded areas together

• Start with rows and columns, then find the product

• Start with the product, then analyze rows and columns

Tags

CCSS.4.NBT.B.5