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July 31, 2013
Learning Target: I can add integersVocabulary: integer
Homework:
July 31, 2013
Integers can be represented with two-color counters.
negative
positive
= -1= +1
negative
positive
= zero pair
integer -- the set of whole numbers and their opposites
July 31, 2013
negative
positive
2 + -4Use integer chips to find each sum.
negative
July 31, 2013
negative
positive
-2 + (-4)Use integer chips to find each sum.
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negative
positive
-5 + (-4)Use integer chips to find each sum.
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negative
positive
3 + (-4)Use integer chips to find each sum.
positive
July 31, 2013
negative
positive
Use integer chips to find each sum.
4 + (-6)
July 31, 2013
negative
positive
-5 + 2Use integer chips to find each sum.
July 31, 2013
negative
positive
7 + (-3)Use integer chips to find each sum.
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negative
positive
-6 + 3Use integer chips to find each sum.
July 31, 2013
Think Pair Share
Will 8 + (-3) and -3 + 8 give the same answer? Why or why not?
July 31, 2013
Think Pair Share
If you have more yellow chips than red chips in a group, is the sum of the chips positive or negative?
July 31, 2013
Think Pair Share
If you have more red chips than yellow chips in a group, is the sum of the chips positive or negative?
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negative
positive
4 + (-7)Use integer chips to find each sum.
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negative
positive
-5 + (-4)Use integer chips to find each sum.
July 31, 2013
negative
positive
-5 + 1Use integer chips to find each sum.
July 31, 2013
negative
positive
6 + (-4)Use integer chips to find each sum.
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negative
positive
Write the addition problem modeled below
positive positive positive positive
negative negative negative negative negative
July 31, 2013
negative
positive
Write the addition problem modeled below
positive positive positive
negative negative negative
July 31, 2013
negative
positive
Write the addition problem modeled below
positive positive positive positive
negative
July 31, 2013
negative
positive
Write the addition problem modeled below
positive positive
negative negative negative negative
July 31, 2013
negative
positive
What are some rules that can help you figure out how to add positive and negative numbers without using the red and yellow chips.
July 31, 2013
In the 2001 US Women's Open. Cristie Kerr had the following scores for the four rounds of golf: -1, +3, +1, 0. What was her total score?
July 31, 2013
The temperature at midnight was -15 degrees. During the next 4 hours, a decrease of 5 degrees was recorded. What was the temperature at 4:00 am?
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negative
positive
Evaluate n + (-2) when n = -10
July 31, 2013
negative
positive
Evaluate n + (-2) when n = -10
July 31, 2013
negative
positive
Evaluate -6 + a when a = 7
July 31, 2013
negative
positive
Evaluate -6 + a when a = -2
July 31, 2013
negative
positive
Evaluate -6 + a when a = -9
July 31, 2013
negative
positive
Evaluate -6 + a when a = 8
July 31, 2013
negative
positive
Evaluate x + (-3) when a = 7
July 31, 2013
negative
positive
Evaluate -9 + n when n = 7
July 31, 2013
negative
positive
Evaluate m + (-2) when m = -4
July 31, 2013
negative
positive
Evaluate n + 19 when n = -5
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