Getting to the Core. A9 Functions Unit of Study. Algebra II. Updated on May 3, Student Name Period
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1 Getting to the Core Algebra II A9 Functions Unit of Study Updated on May 3, 03 Student Name Period
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3 Unit A9 Functions Table of Contents Lessons Description Page Title page Unit A9 Functions Table of Contents Table of Contents 3 A9-H- Hook Cube Growth 5 A9-PTL-A A9-- A9-- Preparing the Learner Lesson Functions Unit Pre-Assessment Functions Unit Skill Preview Multiple Representations: Expert Investigation Growth Functions Summary of Key Features from Each of Five Representations Domain & Range Domain & Range Texts Three Quadratic Functions Three Cubic Functions Three Linear Functions Three Exponential Functions Three Radical (Square Root) Functions A9-SA- Summative Assessment Part Growth Rates 47 A9-SA- Summative Assessment Part Functions Assessment 49 3
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5 Cube Growth Name Period Jason is creating cubes with different side lengths out of straws and construction paper. He needs your help to figure out how many straws (each straw is ft) and sheets of paper (ft by ft) he needs. Help Jason calculate how many materials he should purchase by completing the following table. Start by counting the straws and papers for a cube with edges of foot, then count for the nd and 3 rd cube. Next, use the patterns or your own drawings to fill in the rows for 0, 4 and 5. x (in feet) 0 How many straws Jason would need? How many sheets of construction paper Jason would need to cover the sides? What is the volume of the cube that Jason makes? Note: the volume of a cube is the number of ft cubes that will fit inside it
6 Use the data from your table and three different colors to make three graphs in this coordinate plane. One graph will be for the number of straws. A second will be for the number of ft by ft squares of paper. The third will be for the volume. 6
7 . How many straws do you think Jason will need if x = 6? a. How do you know? Explain the pattern. b. Is there an equation you can create to represent the number of straws Jason will need given any x value? Write the equation. c. What does this graph look like? What type of function is this? d. How many straws will Jason need if x =0? Show your work.. How many sheets of construction paper do you think Jason will need if x = 6? a. How do you know? Explain the pattern. b. Is there an equation you can create to represent the sheets of paper Jason will need given any x value? Write the equation. c. What does this graph look like? What type of function is this? d. How many sheets of paper will Jason need if x = 0? Show your work. 3. What would be the volume if Jason builds a cube with x = 6? a. How do you know? Explain the pattern. b. Is there an equation you can create to represent the volume for any x value? Write the equation. c. What does this graph look like? What type of function is this? d. What will be the volume if x = 0? Show your work. 7
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9 Functions Unit Pre-Assessment Name Part : For each of the functions given below, find the indicated values. Part : Draw the graphs of the following functions. Part 3: Identify the function in each graph. 9
10 Functions Unit Skill Review Name Note: is read f of x equals five x and is read f of 4 and is the y-value or function value at x=4. For each of the functions given below, find the indicated values. Draw the graphs of the following functions by calculating function values for each input. x y x y x y x y 0
11 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here:
12 Growth Function Page Name Data Table x f(x) Graph Model Equation Situation Drawing Record your observations and questions here:
13 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 3
14 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Ezra starts with just one block, but doubles his amount on the first day. He continues to double his amount every day. Record your observations and questions here: 4
15 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawings of the first five days. Record your observations and questions here: 5
16 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 6
17 Growth Function Page Name Data Table x f(x) Graph Model Equation Situation Drawing Record your observations and questions here: 7
18 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 8
19 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Simon loves squares. He doesn t have one on the first day, but every day after he makes a square with an area that is one larger than the day before. Then he measures the side of the square. Drawing Record your observations and questions here: 9
20 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing??? 3 4?? Record your observations and questions here: 0
21 Growth Function Page Name Data Table x f(x) Graph Model Equation Situation Drawing Record your observations and questions here:
22 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here:
23 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 3
24 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Figure Figure Figure 3 Record your observations and questions here: 4
25 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Bella is building a pattern with square tiles that she calls Squares with Wings. Each square has two straight wings that are as long as the side of the square. Drawing Record your observations and questions here: 5
26 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 6
27 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 7
28 Growth Function Page Name Data Table x f(x) Graph Model Equation Situation Drawing Record your observations and questions here: 8
29 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing How many unit cubes does it take to build a larger cube that is x long on each edge? Record your observations and questions here: 9
30 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 30
31 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 3
32 Growth Function Page Name Data Table x f(x) Graph Model Equation Situation Drawing Record your observations and questions here: 3
33 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 33
34 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Angel is saving money for a new skateboard. He has $ and knows if he stops buying cookies at lunch he can save $3 each week. How much will he have in x weeks? Drawing Record your observations and questions here: 34
35 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 35
36 Growth Function Page Name Data Table x Model Equation f(x) Graph Situation Drawing Record your observations and questions here: 36
37 Summary of Key Features from Each of the Five Representations Directions: In each of the boxes below, write several sentences explaining how all of your pages match. Each box is about a different key feature of the function. In your writing, include specific facts from your different representations of the function. Be sure to include observations from all five representations: table, graph, equation, drawing and story. Y-intercept: How does the y-intercept appear in each representation? What does it mean? Other Points: Explain how pairs of inputs and outputs are the same in each representation. Explain what a few of them mean. Rate of Change: How is the function growing? How do you see this growth in each representation? Explain how the rate of change matches across all of the representations. 37
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41 Three Quadratic Functions Notes/Observations about the domain and range of f(x): Notes/Observations about the domain and range of g(x): Notes/Observations about the domain and range of h(x): Observations/Conjectures/Conclusions about the domains and ranges of quadratic functions: (Please be sure to explain and justify your statements.) 4
42 Three Cubic Functions Notes/Observations about the domain and range of f(x): Notes/Observations about the domain and range of g(x): Notes/Observations about the domain and range of h(x): Observations/Conjectures/Conclusions about the domains and ranges of cubic functions: (Please be sure to explain and justify your statements.) 4
43 Three Linear Functions Notes/Observations about the domain and range of f(x): Notes/Observations about the domain and range of g(x): Notes/Observations about the domain and range of h(x): Observations/Conjectures/Conclusions about the domains and ranges of linear functions: (Please be sure to explain and justify your statements.) 43
44 Three Exponential Functions Notes/Observations about the domain and range of f(x): Notes/Observations about the domain and range of g(x): Notes/Observations about the domain and range of h(x): Observations/Conjectures/Conclusions about the domains and ranges of exponential functions: (Please be sure to explain and justify your statements.) 44
45 Three Radical (Square Root) Functions Notes/Observations about the domain and range of f(x): Notes/Observations about the domain and range of g(x): Notes/Observations about the domain and range of h(x): Observations/Conjectures/Conclusions about the domains and ranges of radical (square root) functions: (Please be sure to explain and justify your statements.) 45
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