Name:________________________________________________________________________________Date:_____/_____/__________ BRAIN BLITZ/ Warm-UP

Evaluate using the Order of Operations:

3 (23 x 5 ÷ 4) - 2

1) 2(10 + 2)2

2)2(10 + 22)

3)- 32 ÷ 3 + (-3)2

4) Be careful . This one is tricky . . .

2(8 + 2) ÷ 2(-9 + 22)

Order of operationsSquarePuzzle

challenge

Teacher will pass out supplies/ give instructions . . .

Today’s Lesson:

What: “evaluating algebraic

expressions”

Why: To evaluate algebraic expressions using the Order of Operations.

What’s the difference??

math sentence that uses BOTH numbersand variables.

Terms– parts of a math sentence separated only by an ______________________________ or subtraction sign.Numeric Expression— math sentence that uses ___________________ only!Algebraic Expression— math sentence that uses BOTH numbers AND ____________________________ .

numbers

variables

addition

3x + 8_________

__________

__________

Essential vocabulary . . .

coefficient

constantvariable

Algebraic Expression Coefficient(s) Variable(s) Constant(s)1) 3xy2) 2x - y + 43) -2 + 5x + yz4) 5x + 2y + 3

Fill-in chart:

3 x and y2 and -1 x and y 4

-2x, y, and z5 and 15 and 2 x and y 3

Evaluate the following when x = -2 and y = 41) ( x) + 8²

2) 3) y + 20 ÷ (x)2

Guided Examples . . .

12 -7 9

4) 4 + 2x + xy5) 3 – x + (-6 – y)²

6) + 4x ²

-8

Evaluate the following when x = -2 and y = 4CONTINUED . . .

105 18

END OF LESSON

The next slides are student copies of the notes for this lesson. These notes were handed out in class

and filled-in as the lesson progressed.

NOTE: The last slide(s) in any lesson slideshow represent the homework assigned

for that day.

Term– part of a math sentence separated only by an ______________________________ or subtraction sign.Numeric Expression— math sentence that uses _________________________ only!Algebraic Expression— math sentence that uses BOTH numbers AND ___________________________.

3x + 8__________

__________

__________

Math-7 NOTES DATE: ______/_______/_______What: “evaluating algebraic expressions”

Why: To evaluate algebraic expressions using the Order of Operations.NAME:

What’s the difference??

Essential vocabulary . . .

Algebraic Expression Coefficient(s) Variable(s) Constant(s)1) 3xy2) 2x - y + 43) -2 + 5x + yz4) 5x + 2y + 3

Fill-in chart:

Evaluate the following when x = -2 and y = 41) ( x) + 8² 2) 3) y + 20 ÷ (x)2

4) 4 + 2x + xy 5) 3 – x + (-6 – y)² 6) + 4x ²

Guided Examples . . .

Math-7 classwork NAME:______________________________________________________________________________ DATE: _____/_____/__________

“Evaluating Algebraic Expressions”

1) 2) 3)

4) 5) 6)

7) 8) 9)

Math-7 HOmework NAME:______________________________________________________________________________ DATE: _____/_____/__________

“Evaluating Algebraic Expressions”

x will be -5 for ALL of the

following: