Download Integer Intro Notes

Accentuate the Negative
Welcome to the World of Integers!
What I
What I
What I
KNOW
WANT I KNOW
LEARNED
about integers
about integers
about integers
Essential Questions:
What are integers and what are their
purpose?
When you subtract two positive
numbers (numbers larger than
zero), it is possible to get an
answer of zero. Zero is
neither positive nor a negative
number.
Integers are a group of numbers that
include positive numbers,
negative numbers and zero.
Integers have no upper bound or
lower bound which means that
range from negative infinity to
positive infinity.
Negative integers are numbers
that are less than zero. Positive
integers are numbers that are
greater than zero.
Real World Examples
Sports – Gain and lose yards
in a football game
Money – deposit and
withdraw money
Weather – Above and below
zero
Geography – Above and
below sea level
The number line is a line labeled with
the integers. Numbers to the right
of zero are positive , and numbers to
the left of zero are negative.
Number Opposites
Name the opposites.
Now let’s try a few numbers.
A number’s distance
from zero
ABSOLUTE
VALUE
A number’s DISTANCE from zero…
The symbol for absolute value is | |.
|6| = 6
|-5| = 5
|0| = 0
On your own paper, answer the following questions:
Let’s practice what we have learned!
Order each group from Least to Greatest.
1) 17, -24, -16, -8, 7, 2, 23
2) -7, -5, 2, -1, 4, 6, -10, 0
Write the opposite and absolute value.
1)
2)
3)
4)
7
-25
106
-241
Let’s practice what we have
learned!
Complete the statement with <,>, or =.
1. -6 ___ 4
2. -2 ___-4
3. 0 ___ -5
4. -24 ___-28
me three number types that
make up integers.
*Tell me two things about the
number zero.
*Tell me one question you have
about today’s lesson.
*Tell
Essential Question:
How can I use and notate
positive and negative
numbers?
Complete pg. 9 A – E
with a learning partner.
Homework
• P. 16 #5
• P. 20 #48
• Workbook p. 59 #6-15
• What are rational numbers?
• Let’s try some!
• Skit
How is the thermometer similar to the number line?
With a learning partner…
Homework
• P. 16 #9-19
• P. 19 # 40-41, 44-47
• P. 20 #49-51
Math Log
Accentuate the Negative
Summary for Investigation 1
Answer these questions:
1. How do you decide which of two
numbers is greater when…
1. Both numbers are positive?
2. Both numbers are negative?
3. One number is positive and one
number is negative?
2. What does comparing locations
of numbers on a number line tell
you about the numbers?