notes for august 10. travail painful, arduous work
TRANSCRIPT
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Notes for August 10
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Travailpainful, arduous
work
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IWBAT add integers.
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Integer – any positive or negative number, excluding fractions, decimals, or percents.
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But I don’t know how to add
integers!!! I think that I am
going to …
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No vorries children!
Adding integers is not that
different from adding whole
numbers.
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There are 3 ways that I use to add integers:
1.) Number Line
2.) Counters
3.) Song
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To use the number line, follow these steps:
1.) Start at the point of the first number
2.) Then do one of two things:
a) If the second number is positive, go to the right the number of
spaces
b) If the second number is negative, go to the left the number of spaces
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Simplify: -3 + 7
3 74
-5 -2-3-4 -1 0 1 2 76543 98
-3Move the point 7 spaces to the RIGHT 4
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Simplify: 4 + (-5)
4 ( 5) 1
-5 -2-3-4 -1 0 1 2 76543 98
-1
Move the point 5 spaces to the LEFT
4
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Simplify: -5 + 2
5 2 3
-5 -2-3-4 -1 0 1 2 76543 98
-5
Move the point 2 spaces to the RIGHT
-3
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To use the counters method, follow these steps:
1.) Make a T-Chart
2.) Use “+” signs to represent the positive number and “-” to represent the negative number
3.) Cross out every “+” that you have a “-” for
4.) Count what you have left. That is your answer. If you have more “+” left, your answer is positive; if you have more “-” left, your answer is negative.
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Simplify 9 + (-5)
9 ( 5)49 -5
+++
++
++
++ -
-
-
-
-
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Simplify -8 + 3
8 3 5-8 3
--
--
--
-- +
+
+
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Simplify -3 + 7
3 74-3 7
+
++
-
-- +
+ +
+
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To add integers, simply sing this song to the tune of Row, Row, Row, Your Boat:
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Simplify -32 + 41
32 419
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Simplify -21 + 14
2114 7
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Simplify -15 + (-20)
15 ( 20) 35
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I am Hall of Fame lineman Randall
McDaniel. I wasn’t selected for 12 Pro
Bowls and the Hall of Fame just because I went to Agua Fria High School. I got
where I am now because of hard work and lots of practice. I most liked practicing using whiteboards.
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It’s whiteboard practice time!