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Functions and Tables

Functions and Tables. By: Red E. Ornot. 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).

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Functions and Tables

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  1. Functions and Tables By: Red E. Ornot

  2. 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.

  3. 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.

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

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

  6. Practice using a Function 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. + 3 + 3 6 ______ = 9 7 ________ = 10 The rule must be + 3 because 6 + 3=9 and 7 + 3 = 10

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

  8. Practice using a Function • Web practice • http://www.amblesideprimary.com/ambleweb/mentalmaths/functionmachines.html

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

  10. Function Tables Let’s imagine this equation + 5 = ___ 5 10 + 5 is the rule

  11. Function Tables Let’s imagine this equation + 5 = ___ 7 12 + 5 is the rule

  12. Function Tables Let’s imagine this equation + 5 = ___ 10 15 + 5 is the rule

  13. Function Tables Let’s imagine this equation + 5 = ___ 13 18 15 20 17 22 + 5 is the rule

  14. Function Tables 15 21 3 10 The rule is x 3

  15. Function Tables 14 3 16 6 The rule is -6

  16. Function Tables 1 6 12 28 The rule is ÷4

  17. Function Tables 23 34 22 6 The rule is + 13

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