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1- What is an input? What is an output?
2- How can I solve for x?
How does the function machine help you?
3- Explain the MAGIC part of my function machine.
4- Is it ever possible for x to be more than one answer? If so, what could the value of x be when solving for x(squared)= 121.

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Vocabulary- Yes, it is important in math too!

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Vocabulary- Yes, it is important in math too!

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Function
Value of X
Input
Output
Solve
Equation
Equal Sign
Inverse
"Adding the opposite"- Additive Inverse

"Whatever you do to one side, you do to the other" - Balance equations

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We will use the function machine as we practice solving algebraic equations

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Students will solve these problems with the assistance of the function machine visual:

1-      3x + 4 = 13

2-      x + 5 = 154

3-      21x – 3 = 18

4-      4x + 3 + 5 = 16

5-      4x = 64

6-      120 – 5x = 100

7-      22 + 11x = 55

8-      x + 6 = 246

9-      23 + x = 3,643

10-   3x + 5x = 16
11- x (squared) = 121

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Students will use the function machine as a visual as they solve for the value of x. The will visualize the function going in the machine, the wonderful magic happening as it travels through, and then finally the end result: THE ANSWER!

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For my function machine, I will use it for the whole class. Considering I teach 7 th graders, I do not feel it would be worthy of class time for them to create their own. Using my one model works as a perfect visual for the full class.

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Materials:

1-  Small shoe box or cardboard box- I used a children’s shoe box

2-  3 colors of paper – I used blue, purple, and tan

3-  Black Marker for Labeling