Download 1.4 - Mathmatuch

Do Now 9/15/10
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Take out HW from last night.
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Copy HW in your planner.
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Text p. 19 #10-36 evens
Text p. 25-26, #18-58 even
Mid-Chapter Quiz Friday (Sections 1.1-1.4)
In your journal, list ten pairs of opposites. What do you
know of in math that has an opposite?
Homework
Text p. 19 #10-36 evens
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10)
12)
14)
16)
18)
20)
22)
11.7
11
3
60
14
1.75
13
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24) 26
26) 45.4
28) a.) 1.5 + 0.03y
b.) 3m
30) 4(1) + 7(2) + 2(3); 24 points
32) 86
34) 5
36) a.) 19.5 + 0.15m
b.) $38.25
Objective
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SWBAT compare and order integers.
Section 1.4, “Compare and Order
Integers”
Integer- the set of whole numbers
and their opposites
“To be an Integer or Not to be an Integer”
¾
-½
+6
+7
-4
-32
Integers
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Integers are divided into three
categories:
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Positive numbers
Negative numbers
Zero
-5 -4 -3 -2 -1 0 1 2 3 4 5
negative
zero
positive
Creating a Number Line …
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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.
Ordering Integers
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Order the following integers from least to greatest.
0, -6, 5, -3, 4, 2
-5 -4 -3 -2 -1 0 1 2 3 4 5
negative
-6, -3, 0, 2, 4, 5
zero
positive
Ordering Integers
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Order the following integers from greatest to least.
-3, 6, 2, 0, 1, -2
-5 -4 -3 -2 -1 0 1 2 3 4 5
negative
zero
positive
6, 2, 1, 0, -2, -3
OPPOSITES
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-5
-4
Two numbers that are the same
distance from ZERO.
-3
-2
negative
-1
0
zero
What is the opposite of -3?
1
2
3
4
5
positive
Opposite of -3 = 3
ABSOLUTE VALUE
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-5
-4
The distance a number is away from
ZERO. Distance is always “positive.”
-3
-2
negative
-1
0
1
2
zero
What is the absolute value of -4? or |-4|
What is |4| ?
3
4
5
positive
|-4| = 4
|4| = 4
Guided Practice
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Text p. 25, #1-15 all
Homework
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Text p.25-26, #18-58 even
Mid-Chapter Quiz Monday (Sections 1.1-1.4)
“Opposites Poster”
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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.