Post on 20-Jan-2016
Accentuate the Negative
Welcome to the World of Integers!
What I
KNOW
about integers
What I
WANT I KNOW
about integers
What I
LEARNED
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
Weather – Above and below zero
Geography – Above and below sea level
Money – deposit and withdraw money
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 VALUEA 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
Complete the statement with <,>, or =.
1. -6 ___ 4 2. -2 ___-4
3. 0 ___ -5 4. -24 ___-28
Let’s practice what we have learned!
*Tell 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.
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 NegativeSummary 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?