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Functions and Tables By: Red E. Ornot

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Our Standards Maryland VSC Standard - 1.A.1.c – Complete a function table using a one- operation (+,-,/,x) -1.A.1.d – Describe the relationship that generates a one- operation rule. Maryland Technology Literacy Student Standard (MTLSS) - 3.A.1.a Use technology tools, including software and hardware, from a range of teacher-selected options to learn new content or reinforce skills.

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What is a Function? A function is a rule, sometimes using variables, that changes a number (input), using multiplication, division, addition, and/or subtraction creating a new number (output) Watch the introduction Movie.

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Functions In the incomplete equation + 5 = ___, Is the input _____ is the output + 5 is the rule

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Practice using a Function In the incomplete equation + 5 = ___, INPUT 2 into Apply the rule + 5 2 + 5= ____ OUTPUT 7

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Solving the Rule If you are given the input and the output, you must determine how the number changed using addition, subtraction, multiplication, or division. Practice using a Function 6 ______ = 9 7 ________ = 10 The rule must be + 3 because 6 + 3=9 and 7 + 3 = 10 + 3

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Sometimes we use function machines to determine rules of functions. Practice using a Function The rule of the function Input Output 12 8 + 4

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Web practice http://www.amblesideprimary.com/amblew eb/mentalmaths/functionmachines.htmlhttp://www.amblesideprimary.com/amblew eb/mentalmaths/functionmachines.html Practice using a Function

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Function Tables InOut The input is a number going in. Lets imagine this equation + 5 = ___ The output is the result of applying the rule ( + 5) + 5 is the rule

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Function Tables InOut Lets imagine this equation + 5 = ___ + 5 is the rule 510

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Function Tables InOut 510 Lets imagine this equation + 5 = ___ + 5 is the rule 712

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Function Tables InOut 510 712 Lets imagine this equation + 5 = ___ + 5 is the rule 1015

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Function Tables InOut 510 712 1015 Lets imagine this equation + 5 = ___ + 5 is the rule 1318 1520 1722

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Function Tables InOut 618 412 5 7 9 30 15 21 3 10 The rule is x 3

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Function Tables InOut 1812 104 20 9 10 0 14 3 16 6 The rule is -6

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Function Tables InOut 205 82 4 24 3 7 1 6 12 28 The rule is ÷4

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Function Tables InOut 1730 114 10 21 35 19 23 34 22 6 The rule is + 13

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