Unit Design
Content Area
Grade/Course
Unit Title
Duration of Unit
Warren County Public Schools
Mathematics
HS Algebra 2
Unit 4: Functions and Introduction to Quadratics
18 days
Priority Standards
HSA.CED.A.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.
HSA.CED.A.2
Create equations in two or more variables to represent relationships between quantities; graph
equations on coordinate axes with labels and scales.
HSA.CED.A3
Represent constraints by equations or inequalities, and by systems of equations and/or inequalities,
and interpret solutions as viable or non-viable options in a modeling context. For example,
represent inequalities describing nutritional and cost constraints on combinations of different foods.
HSA-APR.A.1
Understand that polynomials(quadratics) form a system analogous to the integers, namely, they
are closed under the operations of addition, subtraction, and multiplication; add, subtract, and
multiply polynomials
F.IF.B.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.
F.IF.B.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.
F.IF.C.7.b
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.
F.IF.C.9.
Compare properties of two functions each represented in a different way (algebraically,
graphically, numerically in tables, or by verbal descriptions). Write a function that describes a
relationship between two quantities. (Transformations of Functions)
Quality Core Standards
C.1. Foundations
D. Perform operations on functions, including function composition, and determine domain and
range for each of the given functions
Unit Design
Warren County Public Schools
E.2. Graphs, Relations, and Functions
A. Determine the domain and range of a quadratic function; graph the function with and without
technology.
B. Use transformations (e.g., translation, reflection) to draw the graph of a relation and determine a
relation that fits a graph.
Supporting Standards
HSA.SSE.A.1a
Interpret expressions that represent a quantity in terms of its context. a. Interpret parts of an
expression, such as terms, factors, and coefficients.
HSA.SSE.A.1b
Interpret expressions that represent a quantity in terms of its context.*(Modeling standard) 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.
HSA.REI.D.11.
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 ); 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.A.2.
Use function notation, evaluate functions for inputs in their domains, and interpret statements that
use function notation in terms of a context
F.BF.B. 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.
Concepts (nouns)
Equations and
Inequalities
Solutions
Polynomials(quadratics)
Key Features
Graphs
Domain and Range
Functions
Skills (verbs)
Create, Graph
Bloom’s Level (verb)
Create
Interpret
Understand
Interpret
Sketch, Draw
Determine
Graph, Compare, Write
Analyze
Understand
Analyze
Apply
Understand
Analyze
Learning Targets
LT1: Determine the domain and range of a function.
LT2: Perform operations on functions, including evaluation of functions and function composition.
Unit Design
Warren County Public Schools
LT3: Use transformations (e.g., translation, reflection) to draw the graph of a relation and
determine a relation that fits a graph.
LT4: Graph equations and functions involving quadratics (from both vertex and standard forms)
and interpret the key features. (3)
LT5: Convert quadratic equations from standard form to vertex form and vice versa. (3)
LT6: Create quadratic functions to model and solve real world problems. (6)
Determine Big Ideas (lifelong
understandings)
Quadratic functions can be used to model and
analyze real world problems.
Write Essential Questions (Answer Big Idea,
hook student interest.
Given the path a pole-vaulter takes, will the polevaulter clear the bar?
Formative Assessment Lesson(s):
“The teacher leaders for the Gates grant work recommend that Warren County
Administration adopt the practice that Warren County Math teachers do a minimum of
one Formative Assessment Lesson per quarter. Other choices for formative assessment
lessons may be found at http://map.mathshell.org/materials/lessons.php .
Common Assessments:
HS Algebra 2 Unit 4 DCA – Functions and Introduction to Quadratic Functions Version A
HS Algebra 2 Unit 4 DCA – Functions and Introduction to Quadratic Functions Version B
HS Algebra 2 Unit 4 DCA – Functions and Introduction to Quadratic Functions Version C
Note: HS Algebra 2 Unit 4 DCA – Functions and Introduction to Quadratic Functions
Review is to be used in conjunction with the above assessments.