Mrs. Boswell guides 4th graders through Module 5, Lesson 5, focusing on using area models to decompose unit fractions and demonstrate equivalence. The lesson covers decomposing 1/4 into 1/8 and 1/12, and 3/5 into 1/10, using both addition and multiplication sentences to show equivalence.

What is the main concept introduced in this lesson?

• Using area models to multiply fractions

• Using area models to decompose unit fractions

• Using area models to add fractions

• Using area models to subtract fractions

What is the first step in decomposing a fraction using horizontal lines?

• Draw vertical lines

• Draw horizontal lines

• Shade the entire area

• Erase the existing lines

How is 1/4 represented after decomposing it into two rows?

• 1/8

• 1/2

• 1/16

• 1/32

What is the sum of two 1/8 fractions?

• 1/8

• 1/16

• 1/2

• 1/4

How many times is 1/8 used in the multiplication sentence for 1/4?

• Three times

• Two times

• Four times

• One time

What is the unit fraction when 1/4 is divided into three rows?

• 1/8

• 1/3

• 1/6

• 1/12

How many 1/12 fractions make up the original 1/4?

• Three

• Four

• Six

• Twelve

What is the first step in drawing an area model for decomposition?

• Draw the area model

• Erase the existing lines

• Write the multiplication sentence

• Shade the entire area

How many rows are needed for the area model of three-fifths?

• Two

• Ten

• Three

• Five

What is the unit fraction when three-fifths is decomposed into ten parts?

• 1/15

• 1/10

• 1/20

• 1/5