do now 9/27/11 copy hw in your planner. copy hw in your planner. text p. 48, #16-42 all, 45, 46, 50...

Do Now 9/27/11Do Now 9/27/11

Copy HW in your planner.Copy HW in your planner. Text p. 48, #16-42 all, 45, 46, 50 & 51Text p. 48, #16-42 all, 45, 46, 50 & 51 POTW #3 due tomorrowPOTW #3 due tomorrow

In your journal, list ten pairs of opposites. In your journal, list ten pairs of opposites. What do you know of in math that has an What do you know of in math that has an opposite?opposite?

Objective

SWBAT compare and order integers and determine absolute value.

OPPOSITES OPPOSITES oror ADDITIVE INVERSE ADDITIVE INVERSEnumbers that are the same distance from ZEROnumbers that are the same distance from ZERO..

00 11 22 33 44 55-1-1-2-2-3-3-4-4-5-5

negativenegative positivepositivezerozero

What is the opposite of -3? What is the opposite of -3? Opposite of -3 = 3Opposite of -3 = 3

Section 2.1, “Integers”Section 2.1, “Integers”

3 units 3 units

the set of whole numbers the set of whole numbers and their oppositesand their opposites

““To be an Integer or Not to be an To be an Integer or Not to be an Integer”Integer”

+6+6-4-4+7+7--½½¾¾

-32-32

Integer-Integer-

Integers are divided into three categories: Positive numbers Negative numbers Zero

IntegersIntegers

00 11 22 33 44 55-1-1-2-2-3-3-4-4-5-5

negative positivezero

Creating a Number Line …Creating a Number Line …

Fold your paper in half left to right. Fold your paper top to bottom. At the center mark ZERO. Make a tick mark every ½ inch on

the number line.

Order the following integers from least to greatest.0, -6, 5, -3, 4, 2

Ordering IntegersOrdering Integers

00 11 22 33 44 55-1-1-2-2-3-3-4-4-5-5

negative positivezero

-6, -3, 0, 2, 4, 5

Ordering IntegersOrdering Integers

00 11 22 33 44 55-1-1-2-2-3-3-4-4-5-5

negative positivezero

Order the following integers from greatest to least.-3, 6, 2, 0, 1, -2

6, 2, 1, 0, -2, -3

ABSOLUTE VALUEABSOLUTE VALUE

The distance a number is away from ZERO. Distance is always “The distance a number is away from ZERO. Distance is always “positive.”positive.”

00 11 22 33 44 55-1-1-2-2-3-3-4-4-5-5

negative positivezero

What is the absolute value of -4? or |-4| |-4| = 4

What is |4| ? |4| = 4

Compare. Write <, >, or =.

-45 -46> |-45| |-46|<

|-45| 45= 45 |-46|<

Homework

NJASK7 Prep

Text p. 48, #16-42 all, 45, 46, 50 & 51Text p. 48, #16-42 all, 45, 46, 50 & 51

“Opposites Poster”

Pretend you have to teach a lesson on integers to a 4th grade class. Create a poster on construction paper, about opposites.

Include at least seven picture examples of opposites things.

Include 10 examples of opposite integers.