Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.
Think about this investigation...
I velocity & speed relationship is similar to the integer & absolute value relationship
Velocity = Speed + Direction
* Speed tells how fast an object moves
* Direction tells if the movement is...up - down - forward - backward
* Velocity tells how fast an object moves and tells the direction
Positive velocity object moves up
Negative velocity object moves down
* Direction tells if the movement is...up - down - forward - backward
* Velocity tells how fast an object moves and tells the direction
Positive velocity object moves up
Negative velocity object moves down
NASA shuttle launch |
Parachute
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Examples of how to measure:
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absolute value of velocity = SPEED
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II
Integers
Banking
Deposit = add money to an account
Withdrawal= take money out of an account
Deposit = add money to an account
Withdrawal= take money out of an account
Model bank teller
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Balance an account |
Identity Property of Addition |
Subtraction |
Multiplication |
Division |
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III
Number System
Skim the articles in this link to learn more about the history of the number system.
It has changed and adapted over the years.
You will see a table of contents, just scroll down to view the article.
Answer the questions on the investigation worksheet.
Answer the questions on the investigation worksheet.