1.4 multiplying and dividing integers.notebook multiplying and dividing integers.notebook 1 ......
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1.4 Multiplying and Dividing Integers.notebook
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August 19, 2014
Bell Work Date ________
1) 5 + 4
2) 6 5
3) 7 2
4) 2 + 7
5) 10 15
6) 5 + 8
7) 9 (3)
8) 4 8
Multiplying and Dividing Integers1.4
I can multiply and divide integers.
Lesson Objectives
1.4 Multiplying and Dividing Integers.notebook
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Quiz
Adding and Subtracting Integers
Human Number Line:1. 3(2)2. 1(5)3. 2(4)4. 1(7)5. 3(3)6. 2(5)
Student Activity
Video Clip
1.4 Multiplying and Dividing Integers.notebook
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Number line:• Have students use their number lines
from 1.2a to work out several problems.
Student Activity
1) 2(3)2) 4(2)3) 1(5)4) 2(4)5) 6(1)6) 3(4)
10 2 3 4 5 6 7 8 9 1012345678910
Multiplying with a Number Line
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Charged Field:• Show students how to create a charged
field. • Give students more problems to work out
using the charged field• Students may need a hint (first number is
what they put in/take out; second number is how many will be in each group)
Student Activity
1+1
+1
1
+1 +1 +1 +1
1 1 1 1
+1
1
+1 +1 +1 +1
1 1 1 1
Multiplying Using a Charged Field
+1+1
+1 +1+1
+1
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1) Buying 3 posters for $3 each2) A diver dives 5 miles in one hour. How far did he dive in 2 hours?3) Owing each of your 4 friends $24) A snail moves 2 mi/hr. How far does it get in 3 hours?
10 2 3 4 5 6 7 8 9 1012345678910
RealLife Application Problems
Multiplying and Dividing Integer Rules
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App to Use:• Digitwhiz: Integers
– IntegerOps Multiplication and division problems
– Integer Whiz Mixed problems
Student Activity
Term Definion Example
product the answer to a multiplication problem
factora number that you multiply by
another number to get a product
dividend a number to be divided by another number
divisor a number that divides into another number
quotient the answer to a division problem
divisor dividendquotient
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Multiplying and Dividing Integers
Same Sign: the answer is positive
Different Sign: the answer is negative
5(6) 12 ÷ (3)
8(12)
9 ÷ 3
126 ÷ 9
24(4)
4(5)(8)
486
9(3)(5)
8 7 + 11
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Practice
6(8) 2(3)
Ticket out the Door1. In a test, the score for every correct answer is 5 and negative for every wrong answer is 3. Adam got 3 correct answers and 6 wrong answers. What is his final score?
a) 3 b) 0 c) 15 d) 13
2. Find the product of (55)(3).
a) 165 b) 165 c) 3 d) 3
3. Alice divided 3 by an integer and her result was between 0 and 1. Which integer could have been the divisor?
a) 2 b) 4 c) 2 d) 4
4. Simplify the expression (2)(5)(6)(7).
a) 420 b) 70 c) 420 d) 60
5. A positive number is divided by 7. The quotient would be:
a) Positive b) Negative c) Zero d) One
6. When a number is divided by 2, it gives 5 as the quotient. What is the number?
a) 2.5 b) Zero c) 10 d) 10
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Worksheet
Mathematical Practices Used
Teacher Notes1.4
___ 1. Make sense of problems and persevere in solving them. ___ 2. Reason abstractly and quantitatively.___ 3. Construct viable arguments and critique the reasoning of others.___ 4. Model with mathematics.___ 5. Use appropriate tools strategically.___ 6. Attend to precision.___ 7. Look for and make use of structure.___ 8. Look for and express regularity in repeated reasoning.
XXXXXXXX
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Resources
Teacher Notes1.4
Counters/chips Cards Video Taped Number Line Number Line
Standards
Teacher Notes1.4
Number System 7.NS.2a 7.NS.2b 7.NS.2c
PUSD Framework 1
1.4 Multiplying and Dividing Integers.notebook
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1+1
+1
1
+1 +1 +1 +1
1 1 1 1
+1
1
+1 +1 +1 +1
1 1 1 1
Multiplying Using a Charged Field
1) 3(2)2) 2(4)3) 5(1)4) 3(3)5) 1(3)6) 4(2)
