Accentuate the Negative - PowerPoint

							Accentuate the Negative

Welcome to the World of Integers!
   What I           What I           What I
   KNOW          THINK 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   Money – deposit and
in a football game             withdraw money




Weather – Above and below      Geography – Above and
zero                           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)   7
2)   -25
3)   106
4)   -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
*Tellme 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.
   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?