Adding and Subtracting Fractions on a Line Plot

Mr. Nazarian introduces the concept of adding and subtracting fractions using a line plot, aligned with fifth-grade standards. The video demonstrates how to visually represent fractions with common denominators on a line plot, first by adding one-fourth and two-fourths, and then by subtracting five-twelfths from eleven-twelfths. The lesson emphasizes the importance of labeling line plots and understanding the direction of movement for addition and subtraction. The session concludes with a brief summary and a look ahead to the next lesson.

What is the primary objective of this lesson?

• To solve complex algebraic equations

• To learn about the history of mathematics

• To add and subtract fractions on a line plot

• To understand the Pythagorean theorem

Tags

CCSS.8.EE.C.7B

What fractions are being added in the example?

• 1/4 + 2/4

• 1/2 + 2/2

• 1/3 + 2/3

• 1/5 + 2/5

Tags

CCSS.4.NF.B.3A

How many sections should the line be divided into when adding 1/4 + 2/4?

• Four

• Five

• Three

• Two

Tags

CCSS.4.NF.B.3A

What does the line plot represent when adding fractions?

• No change

• An increase in value

• A static value

• A decrease in value

Tags

CCSS.4.MD.B.4

What is the purpose of dividing the line into sections when working with fractions?

• To save time

• To make the plot look more complex

• To confuse the students

• To accurately represent each fraction

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What fractions are being subtracted in the example?

• 10/12 - 4/12

• 11/12 - 5/12

• 8/12 - 2/12

• 9/12 - 3/12

Tags

CCSS.4.NF.B.3A

What is the result of subtracting 5/12 from 11/12?

• 5/12

• 6/12

• 7/12

• 4/12

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is 6/12 equivalent to when simplified?

• 1/3

• 1/2

• 2/3

• 3/4

When subtracting fractions on a line plot, in which direction do we move?

• To the right

• Upwards

• Downwards

• To the left

Tags

CCSS.4.MD.B.4

What is the final step in the lesson?

• Introducing a new topic

• Summarizing the process of adding and subtracting on a line plot

• Taking a quiz

• Reviewing algebraic expressions

Tags

CCSS.4.MD.B.4