Understanding Positive and Negative Numbers

Mrs. Bobby introduces integers and number lines, explaining positive and negative numbers. She discusses horizontal and vertical number lines, focusing on zero as the center. The concept of absolute value is explained as the distance from zero, with examples. The lesson includes plotting numbers and finding their opposites on the number line. The video concludes with a discussion on vertical number lines, using sea level as an analogy for zero.

What are integers?

• Fractions and decimals

• Positive and negative whole numbers

• Only positive numbers

• Only negative numbers

On a number line, what does zero represent?

• The highest point

• The lowest point

• A random point

• The center or origin

Which direction do positive numbers increase on a number line?

• To the left

• Upwards

• Downwards

• To the right

How do negative numbers behave as they get larger in absolute value?

• They become smaller

• They become larger

• They become positive

• They remain the same

What is the absolute value of -7?

• 14

• 7

• 0

• -7

How far is the number 3 from zero on a number line?

• 9 steps

• 0 steps

• 6 steps

• 3 steps

What is the opposite of a positive number on a number line?

• A negative number at the same distance from zero

• Zero

• A larger positive number

• A smaller positive number

If sea level is considered zero, what does a point above sea level represent?

• A negative value

• A positive value

• An undefined value

• Zero

What does a point below sea level indicate?

• A positive value

• A negative value

• Zero

• An undefined value

What is the opposite of -4 on a number line?

• 0

• 8

• -8

• 4