Opposites and Number Lines

In this lesson, Mr. Hul explains the concept of a number's opposite and the opposite of an opposite. The classwork includes exercises on locating opposites on a number line, writing integers for real-world scenarios, and using an ice cream shop scenario to understand distances. The lesson also covers examples and exercises using cards to find opposites and writing equations for the opposite of -10. A real-world example is provided to illustrate the concept.

What is the opposite of -2 on a number line?

• -2

• 0

• -4

• 2

If a location is 90 feet below sea level, which integer represents this?

• 9

• 90

• -90

• 0

Joe is at the ice cream shop. If his house is 10 blocks north and the park is 10 blocks south, how far is he from each?

• 10 blocks from both

• 10 blocks from the house, 5 blocks from the park

• 5 blocks from the house, 10 blocks from the park

• 5 blocks from both

How can zero be used in Joe's location exercise?

• As a starting point

• As a distance marker

• As a reference point

• As a midpoint

What is the opposite of 8 on a number line?

• -8

• 0

• 8

• -16

What is the opposite of the opposite of 8?

• 8

• 16

• 0

• -8

In the card exercise, if card A is 4, what is the opposite of card A?

• 0

• 8

• 4

• -4

What is the opposite of the opposite of -10?

• 20

• 0

• -10

• 10

If the opposite of 150 is -150, what is the opposite of the opposite of 150?

• 300

• 150

• -150

• 0

Provide a real-world example of the opposite of the opposite concept.

• Temperature change

• Sea level depth

• Distance traveled

• Time elapsed