Mathematics Curriculum: Algebra 2/2 Honors 1 Algebra 2 Mapping: Dates Math September 4- October 24, 2014 5 Weeks 2 Weeks Instruction Assessment/ Enrichment/ Unit 1 Asmnt 1/Unit 1 October 27 – December 22 2014 5 Weeks 2 Weeks Instruction Assessment/ Enrichment/ Unit 2 Asmnt 2/Unit2 January 5 –Feb 27 2015 March 2 – Apr 24, 2015 Apr 27-June 19, 2015 5 Weeks Instruction 5 Weeks Instruction 5 Weeks Instruction Unit 3 2 Weeks Assessment/ Enrichment/ Asmnt 3/Unit 3 Unit 4 2 Weeks Assessment/ Enrichment/ Asmnt 4/Unit 4 Unit 3 2 Weeks Assessment/ Enrichment/ Asmnt 5/Unit 5 Algebra 2 Unit Plan/Development: Mathematics: Algebra 2 Standard N.CN.7 A.REI.4.b Description Solve quadratic equations with real coefficients that have complex solutions. Solve quadratic equations in one variable. b. Solve quadratic equations by inspection (e.g., for x2 = 49), taking square roots, completing the square, the quadratic formula and factoring, as appropriate to the initial form of the equation. Recognize when the quadratic formula gives complex solutions and write them as a ± bi for real numbers a and b. Unit #1: Polynomials 9/4/14-10/24/14 Student Learning Objectives Solve quadratic equations with real coefficients that have complex solutions. Unit #1 Performance Tasks/Critical Thinking Writing Task 1. If you are asked to write a polynomial function of least degree with zeros of 2 and sqrt 7, what would be the degree of the polynomial? Explain. 2. You are designing a cylindrical, plastic glass with an outside layer of water that, when frozen, keeps the contents of the glass cold. The outer height of the glass should be four times its outer radius, and the thickness of the sides and bottom of the glass should be 1 cm. The glass is to hold 140pi cubic centimeters of 2 A.APR.2 A.SSE.2 A.APR.3A A.SSE.2 A.APR.3 Know and apply the Remainder Theorem: For a polynomial p(x) and a number a, the remainder on division by x – a is p(a), so p(a) = 0 if and only if (x – a) is a factor of p(x). Use the structure of an expression to identify ways to rewrite it. For example, see x4 – y4 as (x2)2 – (y2)2, thus recognizing it as a difference of squares that can be factored as (x2 – y2)(x2 + y2). Identify zeros of polynomials when suitable factorizations are available, and use the zeros to construct a rough graph of the function defined by the polynomial. Restructure by performing arithmetic operations on polynomial/rational expressions. Use the structure of an expression to identify ways to rewrite it. For example, see x4 – y4 as Explain the relationship between zeros and factors of polynomials and use zeros to construct a rough graph Use an appropriate factoring technique to factor expressions completely including expressions with complex numbers. liquid: Critical Thinking a. Why might you have chosen 140pi cubic cm for the capcity of the glass? (1floz=29.537 cubic cm) b. Write a function V1(x) for the volume of liquid the glass can hold. Substitute 140 pi for V1(x) and rewrite the resulting equation in standard form. c. Use the rational zero theorem to list the rational possibilities for the outer radius. Use a graphing calculator to determine which rational possibilities for the outer radius are reasonable. d. Use the zero (or root) feature of the calculator and the equation from part (b) to approximate the outer radius of the glass to the nearest whole number. e. The thickness of the glass (1cm) includes the thickness of the plastic and 3 (x2)2 – (y2)2, thus recognizing it as a difference of squares that can be factored as (x2 – y2)(x2 + y2). Identify zeros of polynomials when suitable factorizations are available, and use the zeros to construct a rough graph of the function defined by the polynomial. of the function defined by the polynomial. Derive the formula for the sum of a finite geometric series (when the common ratio is not 1), and use the formula to solve problems. Derive the formula for the sum of a finite geometric series (when the common ratio is not 1), and use the formula to solve problems. For example, calculate mortgage payments. Use Properties of operations to add, subtract, and multiply complex numbers. A.SSE.4 N.CN.1 N.CN.2 Know there is a complex number i such that i2 = −1, and every complex number has the form a + bi with a and b real. Use the relation i2 = –1 and the commutative, associative, and distributive properties to add, subtract, and multiply complex numbers. the space for water. Write a function V2(x) for the volume of the sides and bottom of the glass. Use your answer from part (d) to approximate this volume to the nearest whole number. 4 Unit 1 Addendum Technology Standard Description Performance Task Create a personal digital portfolio which reflects personal and academic interests, achievements, and career aspirations by using a variety of digital tools and resources. 8.1.12.A.1Understand and use technology systems. 8.1.12.A.4Select and use applications effectively and productively Construct a spreadsheet workbook with multiple worksheets, rename tabs to reflect the data on the worksheet, and use mathematical or logical functions, charts and data from all worksheets to convey the results. 8.1.12.A.2Select and use applications effectively and productively Produce and edit a multi-page digital document for a commercial or professional audience and present it to peers and/or professionals in that related area for review. Students will create a wiki page as part of the class wikispace. Students will update this space throughout the year. It will serve as a digital portfolio for projects and other assignments. Students will develop formulas for sequences and series using the excel program. Students will develop formulas for quadratics and utilize the graphing function to determine the roles of each piece of the formula. Students will create power point presentations throughout the unit to display projects and assignments. Students will house documents, assignments, and presentations on their wiki page. 5 Differentiated- GnT/ELL Standard Description Performance Task Description Performance Task Description Performance Task 21st Century and Careers Standard Reading and Writing Standard 6 Algebra 2 Standard N.RN.1, N.RN.2 A.REI.1 A.REI.2 Description Explain how the definition of the meaning of rational exponents follows from extending the properties of integer exponents to those values, allowing for a notation for radicals in terms of rational exponents. For example, we define 51/3 to be the cube root of 5 because we want (51/3)3 = 5(1/3)3 to hold, so (51/3)3 must equal 5. Rewrite expressions involving radicals and rational exponents using the properties of exponents. Explain each step in solving a simple equation as following from the equality of numbers asserted at the previous step, starting from the assumption that the original equation has a solution. Construct Unit #2: Expressions and Equations 10/27/14-12/22/14 Student Learning Objectives Use properties of integer exponents to explain and convert between expressions involving radicals and rational exponents, using correct notation. For example, we define 51/3 to be the cube root of 5 because we want (51/3)3 = 5(1/3)3 to hold, so (51/3)3 must equal 5. Solve simple equations in one variable and use them to solve problems, justify each step in the process and the solution and in the case of rational and radical equations show how extraneous solutions may arise. Unit #2 Performance Tasks/Critical Thinking Writing Task 1. Why do students often think it is not possible to multiply or divide two radicals with different indices? How do rational exponents help you to multiply or divide two radicals with different indices? Write/present two examples to support your answer. 2. Your school is putting on a prom fashion show and you are in charge of building a platform to serve as a stage. The main part of the stage is a rectangle and the runway is a square. The length and width of the main part of the stage is 3 times and 2 times the side length of the runway, respectively: a. Write a function A1 (x) for the area of the main part of the stage 7 A.SSE.3 F.IF.4 a viable argument to justify a solution method. Understand solving equations as a process of reasoning and explain the reasoning. Solve simple rational and radical equations in one variable, and give examples showing how extraneous solutions may arise. Choose and produce an equivalent form of an expression to reveal and explain properties of the quantity represented by the expression. c. Use the properties of exponents to transform expressions for exponential functions. For example the expression 1.15t can be rewritten as (1.151/12)12t ≈ 1.01212t to reveal the approximate equivalent monthly interest rate if the annual rate is 15%. For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities, and sketch graphs showing key features given a verbal description of the relationship. b. c. Write equivalent expressions for exponential functions using the properties of exponents. d. e. f. and a function A2 (x) for the area of the runway. Write a function A(x) for the area of the entire stage. Graph the function A. How can you use the graph to explain why the inverse of A is not a function? Writing How can you restrict the domain of A so that A-1 is a function? Why does this restriction make sense in the context of the problem? Find the inverse of A, assuming that its domain is restricted as you described in part (d). what information can you obtain from the inverse function? You have 700 square feet of plywood to make the stage floor. Use the inverse from part € to find the dimensions of the runway and the main part of the stage. Interpret key features of graphs and tables in terms of the quantities, and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and 8 Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. periodicity. Unit 2 Addendum Technology Standard Description 8.1.12.F.1Collect and analyze data to identify solutions and/or make informed decisions. Evaluate the strengths and limitations of emerging technologies and their impact on educational, career, personal and or social needs. 8.1.12.E.1Plan strategies to guide inquiry. Locate, organize, analyze, evaluate, synthesize, and ethically use information from a variety of sources and media. Produce a position statement about a real world problem by developing a systematic plan of investigation with peers and experts synthesizing information from multiple sources 8.1.12.E.2 Evaluate and select information sources and digital tools based on the appropriateness for specific tasks. Process data and report results. Research and evaluate the impact on society of the unethical use of digital tools and present your research to peers. Performance Task Students will conduct research on a topic of interest on the environment. This research will help gather data to be analyzed. (formulas and graphs) Results will be presented. Data that has been analyzed will then be used to determine cause and effect on topic chosen and research solutions. Student will use data and graphical analysis to determine if the solutions are effective/ineffective. Student will present results through power point/wiki space. 9 Differentiated-GnT/ELL Standard Description Performance Task 10 21st Century and Careers Standard Description Performance Task Description Performance Task Reading and Writing Standard 11 Algebra 2 Standard A.REI.11 Write arithmetic and geometric sequences both recursively and with an explicit formula, use them to model situations, and translate between the two forms. F.BF.2 Description Explain why the xcoordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solution nsof the equation f(x) = g(x); find the solutions approximately, e.g., using technology to graph the functions, make tables of values, or find successive approximations. Include cases where f(x) and/or g(x) are linear, polynomial, rational, absolute value, exponential, and logarithmic functions. F.IF.4 F.IF.7 For a function that models a relationship between two quantities, interpret Unit #3: Expressions and Equations Cont. & Modeling Functions 1/5/15-2/27/15 Student Learning Objective Find approximate solutions for the intersections of functions and explain why the x-coordinates of the points where the graphs of the equations y = f(x) and y = g(x) intersect are the solutions of the equation f(x) = g(x) involving linear, polynomial, rational, absolute value, and exponential functions. Write arithmetic and geometric sequences both recursively and with an explicit formula, use them to model situations, and translate between the two forms. Graph functions expressed symbolically and show key features of the graph (including intercepts, intervals where the function is increasing, decreasing, positive, or negative; Unit #3 Performance Tasks/Critical Thinking Writing Task 1. In the definition of a logarithm, b can be any positive number except 1. Explain why this constraint means y must be positive. Give two examples to support your answer, one where x is negative and one where x is a fraction between 0 and 1. 2. In 1995, a home builder builds the exact same model of house in two different cities in two different states. The table shows the value of each house v1 and v2 for t years after 1995: Time, t 2 4 6 8 10 Value, v1 260 275 279 285 287 (thousands) Value, v2 210 250 300 361 420 (thousands) a. Use a graphing calculator to draw two scatterplots, one of Lnv1 vs t and another of ln v2 vs t in the same viewing window. 12 key features of graphs and tables in terms of the quantities, and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. Graph functions expressed symbolically and show key features of the graph, by hand in simple cases and using technology for more complicated cases. f. Graph exponential and logarithmic functions, showing intercepts and end behavior, and trigonometric functions, showing period, relative maximums and minimums; symmetries; end behavior; and periodicity) by hand in simple cases and using technology for more complicated cases. b. c. d. e. f. g. Use a graphing calculator to draw two scatter plots one of ln v2 vs t and another of v2 vs ln t, in the same viewing window. Based on your results from (a) and (b), does the exponential function or a power function better fit each set of original data? Describe how to verify your answer for part (c) using a graphing calculator. Find a model for the value of each house. Estimate the value of each house in 2002 to the nearest thousand. Approximately how many years would it take the value of the first house, to reach 300,000? Determine the solution algebraically. 13 midline, and amplitude Find inverse functions. a. Solve an equation of the form f(x) = c for a simple function f that has an inverse and write an expression for the inverse. For example, f(x) =2 x3 or f(x) = (x+1)/(x–1) for x ≠ 1 F.BF.4 Determine the inverse function for a simple function that has an inverse and write an expression for it. h. i. Critical thinking Determine the year when the values of the two houses were equal. Describe how you can find the solution graphically and algebraically. Explain why using an algebraic method would be more difficult than in part (g). Critical Thinking Describe the rate of change in the value of each house. What factors may have affected the values of the two houses. Unit 3 Addendum Technology Standard 8.1.12.E.1Locate, organize, analyze, evaluate, synthesize, and ethically use information from a variety of sources and media. Evaluate and select information sources and digital tools based on the appropriateness for specific tasks. Description Produce a position statement about a real world problem by developing a systematic plan of investigation with peers and experts synthesizing information from multiple sources. Performance Task Students will research home values in an area of interest. Students will analyze 10 years of home values. Students will develop formulas based on data to help project the future value of homes. Students will present their data on 14 wiki or powerpoint Process data and report results. 8.1.12.E.2Locate, organize, analyze, evaluate, synthesize, and ethically use information from a variety of sources and media. Evaluate and select information sources and digital tools based on the appropriateness for specific tasks. Process data and report results. Research and evaluate the impact on society of the unethical use of digital tools and present your research to peers. Differentiation-GnT/ELL Standard Description Performance Task 15 21st Century and Careers Standard Description Performance Task Description Performance Task Reading and Writing Standard 16 Algebra 2 Standard N.Q.2 F.IF.4 F.IF.7 Description Define appropriate quantities for the purpose of descriptive modeling. For a function that models a relationship between two quantities, interpret key features of graphs and tables in terms of the quantities, and sketch graphs showing key features given a verbal description of the relationship. Key features include: intercepts; intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity. Graph functions expressed symbolically and show key features of the graph, by hand in simple cases and using technology for Unit #4: Modeling with Functions Cont. 3/2/15-4/24/15 Student Learning Objective Graph functions that model relationships between two quantities, expressed symbolically, and show key features of the graph (including intercepts, intervals where the function is increasing, decreasing, positive, or negative; relative maximums and minimums; symmetries; end behavior; and periodicity) by hand in simple cases and using technology for more complicated cases. Unit #4 Performance Tasks/Critical Thinking A standard beverage can has a volume of 21.7 cubic inches: a. Use the formula for the volume of a cylinder to write an equation that gives the height h of a can in terms of its radius. b. Write an equation that gives the can’s surface area S in terms of its radius r by substituting the expression for h from part (a) into the formula for the surface area of a cylinder. c. Rewrite your equation from part (b) as ta quotient of two polynomials. Do you expect the graph of S(r) to have a horizontal asymptote? Explain. d. Use a graphing calculator and its minimum feature to find the minimum value of S. what are the dimensions r and h of the can that uses the least material? e. Compare your result from part (d) with the dimensions of an actual beverage can, which has a radius of 1.25 inches and a height of 4.42 inches. 17 F.IF.6 F.IF.8 more complicated cases. b. Graph square root, cube root, and piecewise-defined functions, including step functions and absolute value functions. e. Graph exponential and logarithmic functions, showing intercepts and end behavior, Calculate and interpret the average rate of change of a function (presented symbolically or as a table) over a specified interval. Estimate the rate of change from a graph. Write a function defined by an expression in different but equivalent forms to reveal and explain different properties of the function. Estimate, calculate and interpret the average rate of change of a function presented symbolically, in a table, or graphically over a specified interval. Rewrite a function in different but equivalent forms to identify and explain different properties of the function. f. g. F.BF.1 Write a function that describes a relationship between two quantities.* b. Combine standard function types using arithmetic operations. For Writing Why might the manufacturer choose not to make the beverage can with the least amount of material possible? Critical Thinking Is it possible to make the beverage container shaped like a prism with a square base using less material than it takes to make the cylindrical can with minimal surface area? Explain. Construct a function that combines standard function types using arithmetic operations to model a relationship between two quantities. 18 example, build a function that models the temperature of a cooling body by adding a constant function to a decaying exponential, and relate these functions to the model. Unit 4 Addendum Technology Standard Description Performance Task 19 Differentiation-GnT/ELL Standard Description Performance Task Description Performance Task Description Performance Task 21st Century and Careers Standard Reading and Writing Standard 20 Algebra 2 Standards S.IC.1 Description Understand statistics as a process for making inferences about population parameters based on a random sample from that population. Unit 5: Inference and Conclusions from Data 4/27/15-6/19/15 Student Learning Objective Make inferences about population parameters based on a random sample from that population. S.IC.2 Decide if a specified model is consistent with results from a given data-generating process, e.g., using simulation. For example, a model says a spinning coin falls heads up with probability 0. 5. Would a result of 5 tails in a row cause you to question the model? Determine if the outcomes and properties of a specified model are consistent with results from a given data-generating process using simulation. S.IC.3 Recognize the purposes of and differences among sample surveys, experiments, and observational studies; explain how randomization relates to each. Identify different methods and purposes for conducting sample surveys, experiments, and observational studies and explain how randomization relates to each. S.IC.4 Use data from a sample survey to estimate a population mean or proportion; develop a margin of error through the use of simulation models for random sampling. Use data from a sample survey to estimate a population mean or proportion; develop a margin of error through the use of simulation models for random sampling. Unit #5 Performance Tasks/Critical Thinking Writing Task 1. Explain the difference between the measures of central tendency and a measure of dispersion. Give a reallife example of when it might be preferable to represent a data set using the median or mode, instead of the mean. Explain your reasoning. 2. The student council at your school is responsible for surveying the students to determine whether they would prefer the school to offer study halls and limited electives or no study halls and a broad range of electives. Because 1740 students attend your school, the council decides to survey a sample of the students. a. A student council member suggests that the four representatives from each class (grades 9-12) be surveyed during the next student council meeting. Identify the type of sample described. Then tell if the sample is biased. Explain your reasoning. b. How many students would participate in the survey described in part (a)? Calculate the margin of error for a survey with this sample size. Is it acceptable, why or why not? c. The student council would like the survey to have a margin of error of no more than +/-2% and include no more than one quarter of the student 21 d. e. S.IC.5 S.IC.6 Use data from a randomized experiment to compare two treatments; use simulations to decide if differences between parameters are significant. Evaluate reports based on data. body. Is this possible? If not, explain why and find the least margin of error to the nearest percent that can be achieved by surveying one quarter of the student body? Writing Describe how the student council might achieve an unbiased random sample of one quarter of the student body. Critical Thinking The student council administers the survey as described in part (d). 46% of the students want study halls and limited electives, and 54% of the students want no study halls and a broad range of electives. From this survey, can the school determine which option the student body prefers? Explain Use data from a randomized experiment to compare two treatments and use simulations to decide if differences between parameters are significant; evaluate reports based on data. 22 Unit 5 Addendum Technology Standard Description Performance Task Differentiation-GnT/ELL Standard Description Performance Task 21st Century and Careers Standard Description Performance Task 23 Reading and Writing Standard Description Performance Task 24