7th Grade Math

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7th Grade Math

• Week of 8/18/14

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Monday Bell Work

• 1) 7.2 4.31
• 2) 3.8 1.25
• 3) round to tenths- 2.9547

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1. Estimate
This word actually means.. find an answer close
to the exact answer.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• Absolute Value and Opposites 7. NS.1a Describe
  situations in which opposite quantities combine
  to make 0.

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Lesson

• Absolute Value
• How far a number is from zero.Example "6" is 6
  away from zero, but "-6" is also 6 away from
  zero.So, the absolute value of 6 is 6, and the
  absolute value of -6 is also 6.The symbol ""
  is placed either side to mean "Absolute Value",
  so we can write -6 6
• http//www.mathsisfun.com/definitions/absolute-val
  ue.html

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--8 -8

• If the negative is outside the absolute value
  bar, it will create a negative answer. It is the
  same as multiplying the answer by -1.
• Can be written -1 -8 -8

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Additive Inverses (opposites)

• What you add to a number to get zero. The
  negative of a number.Example The additive
  inverse of -5 is 5, because -5 5 0.The
  additive inverse of 5 is -5 as well.

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Exit / Closure

• Write in your NB (composition notebook)
• 3 things that you learned today.
• Share with a friend.

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Tuesday Bell Work

1. -28
2. -32
3. - 29 _____ -30

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2. Evaluate
This word actually means.. to find the value of
a numerical or algebraic expression
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• Integers with operations
• SPI 0706.2.5 Solve contextual problems that
  involve operations with integers.

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Cut 3 lines to make 4 flaps
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Foldable
Multipli-cation
Division
Addition
subtraction
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Addition Notes

• 2 integers with same sign
• - Add the absolute values
• Keep the same sign -2-3 -5 437
• 2) 2 integers with different signs
• - find the difference of the absolute values-
  keep sign of the greater absolute value- 5 8
  3 4 -2 2
• same signs add and keep/ different signs
  subtract
• Key words
• Deposit, ascend, rose, gain, increase, above

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Subtraction Notes

• Change all subtraction problems to addition
  problems
• Add the opposite following the addition rules
• 7- 15 2- (-3)
• 7 (-15) -8 2 3 5
• -5-3
• -5 (-3) -8
• you can add the opposite because they are
  inverse operations and Undo each other
• Key words
• withdrawal, descend, loss, lowest, decrease,
  below

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Multiplication Notes

• When multiplying 2 integers
• If the sign is the same positive answer
• If the sign is different negative answer
• 6 6 36
• - - -2 -3 6
• - -5 3 -15
• - - 7 -2 -14
• Key words of, times

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Division Notes

• When dividing 2 integers
• If the sign is the same positive answer
• If the sign is different negative answer
• 8 2 4
• - - -6 -3 2
• - -9 3 -3
• - - 4 -2 -2
• Key words per, quotient

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Exit / Closure

• Give 3 examples of why it would be important for
  you to know the how to subtract/ add integers.

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Wednesday Bell Work

1. -2 18
2. 4 -25
3. -90 -10

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3. Justify
This word actually means.. to give a
satisfactory reason for something done / create a
viable argument.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• Integers with operations
• SPI 0706.2.5 Solve contextual problems that
  involve operations with integers.

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Exit / Closure

• Why is it important to know the difference
  between a withdrawal and an deposit?

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Thursday Bell Work

• The mountain has an elevation of 2,298 ft. The
  valley has a depth of -224 ft. What is the
  difference?
• Draw and label picture before solving.

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4. Quantity
This word actually means.. total value of a
given group or specific amount.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• N2K SPI 0706.2.5 Solve contextual problems that
  involve operations with integers
• N2K 1

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• Critical Thinking Activity
• 1. Sean has a checking account at USA Bank. He
  deposited 3 checks, each for 202. He then
  bought a new video game system for 499. What
  integer best describes Seans current bank
  account balance?
• A) 107
• B) 107
• C) 297
• D) 297

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• 1. Denver, Colorado is called The Mile High
  City because its elevation is 5280 feet above
  sea level. Someone tells you that the elevation
  of Death Valley, California is -282 feet.
• Is Death Valley located above or below sea level?
  Cite evidence from the paragraph to justify your
  reasoning.
• How many feet higher is Denver than Death Valley?
  Show your work.
• What would your elevation be if you were standing
  near the ocean? Draw a picture of where you
  would be standing in comparison to both Denver
  and Death Valley.

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Exit / Closure

• What did you learn about todays N2K?
• Do you have questions about the process?

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Friday Bell Work

• The man wrote 3 checks (28.52, 14.38, 31.21).
  The beginning checking account balance was
  423.57. What is his remaining balance.

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5. Coefficient
This word actually means.. the number that is
multiplied by the variable in an algebraic
expression/equation.
What does this word mean to you?
Explain how you would use this word in math.
Examples
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Lesson

• Contextual Integers SPI 0706.2.5 Solve
  contextual problems that involve operations with
  integers.
• Work on the contextual problems

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Exit / Closure

• List key words that helped you understand what
  operation to perform.