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### Algebra 2 CCSS

(Click the link to see the correlation of standards to lessons and problems in the book)

Correlation of CPM Core Connections Algebra 2

to Appendix A: Traditional Pathway of the CCSS

This document identifies the lesson(s) in CPM Core Connections Algebra 2 in which primary instruction of each standard from Appendix A: Traditional Pathway of the Common Core State Standards for Mathematics occurs.

# The Complex Number System N-CN

Perform arithmetic operations with complex numbers.

• 1. Know there is a complex number i such that i^2 = – 1, and every complex number has the form a + bi with a and b real

• 2. Use the relation i^2 = –1 and the commutative,associative, and distributive properties to add, subtract, and multiply complex numbers.

Use complex numbers in polynomial identities and equations.

Limit to polynomials with real coefficients.

• 7. Solve quadratic equations with real coefficients that have complex solutions.

• 8. (+) Extend polynomial identities to the complex numbers. For example, rewrite x^2 + 4 as (x + 2i)(x – 2i).

• 9. (+) Know the Fundamental Theorem of Algebra;show that it is true for quadratic polynomials.

ALGEBRA

# Seeing Structure in Expressions A-SSE

Interpret the structure of expressions

Limit to linear expressions and to exponential expressions with integer exponents. Also, Focus on quadratic and exponential expressions. For A.SSE.1b, exponents are extended from the integer exponents found in Unit 1 to rational exponents focusing on those that represent square or cube roots.

• 1. Interpret expressions that represent a quantity in terms of its context.★

• a. Interpret parts of an expression, such as terms, factors, and coefficients.

• b. Interpret complicated expressions by viewing one or more of their parts as a single entity. For example, interpret P(1+r)^n as the product of P and a factor not depending on P.

• 2. Use the structure of an expression to identify ways to rewrite it. For example, see x^4– y^4 as (x^2)^2– (y^2)^2, thus recognizing it as a difference of squares that can be factored as (x^2– y^2)(x^2+ y^2).

Write expressions in equivalent forms to solve problems

• 4. 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.

# Arithmetic with Polynomials and Rational Expressions A –APR

Perform arithmetic operations on polynomials

Focus on polynomial expressions that simplify to forms that are linear or quadratic in a positive integer power of x.

• 1. Understand that polynomials form a system analogous to the integers, namely, they are closed under the operations of addition, subtraction, and multiplication; add, subtract, and multiply polynomials.

Understand the relationship between zeros and factors of polynomials

• 2. 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).

• 3. 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.

Use polynomial identities to solve problems

• 4. Prove polynomial identities and use them to describe numerical relationships. For example, the polynomial identity (x^2 + y^2)^2 = (x^2 – y^2)^2 + (2xy)^2 can be used to generate Pythagorean triples.

• 5. (+) Know and apply the Binomial Theorem for the expansion of (x+ y)^n in powers of x and y for a positive integer n, where x and y are any numbers, with coefficients determined for example by Pascal’s Triangle.1

Rewrite rational expressions

• 6. Rewrite simple rational expressions in different forms; write a(x)/b(x) in the form q(x) + r(x)/b(x), where a(x), b(x), q(x), and r(x) are polynomials with the degree of r(x) less than the degree of b(x), using inspection, long division, or, for the more complicated examples, a computer algebra system.

• 7. (+) Understand that rational expressions form a system analogous to the rational numbers, closed under addition, subtraction, multiplication, and division by a nonzero rational expression; add, subtract, multiply, and divide rational expressions.

# Creating Equations★ A -CED

Create equations that describe numbers or relationships

• 1. Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions, and simple rational and exponential functions.

• 2. Create equations in two or more variables to represent relationships between quantities; graph equations on coordinate axes with labels and scales.

• 3. Represent constraints by equations or inequalities, and by systems of equations and/or inequalities, and interpret solutions as viable or nonviable options in a modeling context. For example, represent inequalities describing nutritional and cost constraints on combinations of different foods.

• 4. Rearrange formulas to highlight a quantity of interest, using the same reasoning as in solving equations. For example, rearrange Ohm’s law V =IR to highlight resistance R.

# Interpreting Functions F-IF

Interpret functions that arise in applications in terms of the context

• 4. 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.★

• 5. Relate the domain of a function to its graph and, where applicable, to the quantitative relationship it describes. For example, if the function h(n) gives the number of person-hours it takes to assemble n engines in a factory, then the positive integers would be an appropriate domain for the function.★

• 6. 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.★

Analyze functions using different representations

• 7. Graph functions expressed symbolically and show key features of the graph, by hand in simple cases and using technology for more complicated cases.★

• b. Graph square root, cube root, and piecewise-defined functions, including step functions and absolute value functions.

• c. Graph polynomial functions, identifying zeros when suitable factorizations are available, and showing end behavior.

• e. Graph exponential functions, showing intercepts and end behavior.

• 8. Write a function defined by an expression in different but equivalent forms to reveal and explain different properties of the function.

• a. Use the process of factoring and completing the square in a quadratic function to show zeros, extreme values, and symmetry of the graph, and interpret these in terms of a context.

• b. Use the properties of exponents to interpret expressions for exponential functions. For example, identify percent rate of change in functions such as y = (1.02)^t, y = (0.97)^t, y = (1.01)^12t, y = (1.2)^t/10, and classify them as representing exponential growth or decay.

• 9. Compare properties of two functions each represented in a different way (algebraically, graphically, numerically in tables, or by verbal descriptions). For example, given a graph of one quadratic function and an algebraic expression for another, say which has the larger maximum.

# Building Functions F-BF

• 1. Write a function that describes a relationship between two quantities.★

• b. Combine standard function types using arithmetic operations. For 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.

Build new functions from existing functions

• 3. Identify the effect on the graph of replacing f(x) by f(x) + k, k f(x), f(kx), and f(x + k) for specific values of k (both positive and negative); find the value of k given the graphs. Experiment with cases and illustrate an explanation of the effects on the graph using technology.

• 4. 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 for x > 0 or f(x) = (x+1)/(x–1) for x ≠ 1.

# Linear and Exponential Models★ F -LE

Construct and compare linear and exponential models and solve problems

• 4. For exponential models, express as a logarithm the solution to ab^(ct) = d where a, c, and d are numbers and the base b is 2, 10, or e; evaluate the logarithm using technology.

Interpret expressions for functions in terms of the situation they model

• 5. Interpret the parameters in a linear or exponential function in terms of a context.

# Trigonometric Functions F-TF

Extend the domain of trigonometric functions using the unit circle

• 1. Understand radian measure of an angle as the length of the arc on the unit circle subtended by the angle.

• 2. Explain how the unit circle in the coordinate plane enables the extension of trigonometric functions to all real numbers, interpreted as radian measures of angles traversed counterclockwise around the unit circle.

Model periodic phenomena with trigonometric functions

• 5. Choose trigonometric functions to model periodic phenomena with specified amplitude, frequency, and midline.★

Prove and apply trigonometric identities

• 8. Prove the Pythagorean identity sin^2(θ) + cos^2(θ) = 1 and use it to calculate trigonometric ratios.

# Interpreting Categorical and Quantitative Data S-ID

Summarize, represent, and interpret data on two categorical and quantitative variables
• 4. Use the mean and standard deviation of a data set to fit it to a normal distribution and to estimate population percentages. Recognize that there are data sets for which such a procedure is not appropriate. Use calculators, spreadsheets, and tables to estimate areas under the normal curve.

# Making Inferences and Justifying Conclusions S-IC

Understand and evaluate random processes underlying statistical experiments

• 1. Understand statistics as a process for making inferences about population parameters based on a random sample from that population.

• 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?

Make inferences and justify conclusions from sample surveys, experiments, and observational studies

• 3. Recognize the purposes of and differences among sample surveys, experiments, and observational studies; explain how randomization relates to each.

• 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.

• 5. Use data from a randomized experiment to compare two treatments; use simulations to decide if differences between parameters are significant.

• 6. Evaluate reports based on data.

# Using Probability to Make Decisions S-MD

Calculate expected values and use them to solve problems

• 6. (+) Use probabilities to make fair decisions (e.g., drawing by lots, using a random number generator).

• 7. (+) Analyze decisions and strategies using probability concepts (e.g., product testing, medical testing, pulling a hockey goalie at the end of a game).