Exploring Adding and Subtracting Rational Expressions

Mrs. Boulder introduces Eureka Module 2, focusing on rational numbers. The lesson begins with an overview of positive and negative numbers, using a Venn diagram to explore their properties. The concept of absolute value and additive inverses is explained, with examples using a number line. A real-world scenario involving money is used to illustrate these concepts. The lesson concludes with exercises on adding numbers using a number line, emphasizing the importance of understanding absolute value and direction.

What materials are suggested for taking notes during the lesson?

• A laptop and a pen

• A spiral notebook, printed pages, or a digital device

• A whiteboard and markers

• A tablet and stylus

Tags

CCSS.RI.6.3

CCSS.RI.6.5

CCSS.RI.7.3

CCSS.RI.7.5

CCSS.RI.9-10.3

What should you do if you prefer using pencil and paper?

• Write on your desk

• Use a whiteboard

• Print out the digital pages

• Use a tablet

What is the purpose of the Venn diagram in the lesson?

• To solve equations

• To list prime numbers

• To compare and contrast positive and negative numbers

• To draw number lines

How are positive and negative numbers related according to the lesson?

• They are both even numbers

• They are both greater than zero

• They are both prime numbers

• They are additive inverses

Tags

CCSS.6.NS.C.6A

What is the absolute value of -7?

• 0

• -1

• 7

• -7

Tags

CCSS.6.NS.C.7C

What is the additive inverse of 4?

• 8

• 0

• -4

• 4

Tags

CCSS.7.NS.A.1B

In the real-world example, how is spending money represented?

• As a fraction

• As zero

• As a negative number

• As a positive number

Tags

CCSS.6.NS.C.5

How do you represent the addition of -2 and 3 on a number line?

• Draw an arrow 3 spaces to the left and 2 spaces to the right

• Draw an arrow 2 spaces to the right and 3 spaces to the left

• Draw an arrow 2 spaces to the left and 3 spaces to the right

• Draw an arrow 3 spaces to the right and 2 spaces to the left

Tags

CCSS.7.NS.A.1B

What is the result of adding -2 and 3?

• 5

• -1

• -5

• 1

Tags

CCSS.7.NS.A.1C

What should you do if you have questions about the homework?

• Ask a friend

• Ignore them

• Reach out to the teacher

• Search online

Tags

CCSS.RI.7.3

CCSS.RI.7.5

CCSS.RI.8.3

CCSS.RI.8.5

CCSS.RI.9-10.3