Unit Plan
Math Planet

Math Planet: The Graph of Y = Ax^2 + Bx + C

For Students 9th - 10th Standards
A nonlinear function that can be written on the standard form ax^2 + bx + c,where a is not = 0, is called a quadratic function. All quadratic functions hava a U-shaped graph called a parabola.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F if.c.7.a, a sse.b.3, F if.c.7: Graphs of Quadratic

For Teachers 9th - 10th
During this task, students will realize that equivalent expressions produce the same graph. The activity will lead to discussions about the value of different forms of equations. Aligns with F-IF.C.7.a, A-SSE.B.3, and F-IF.C.7.
eBook
Math Planet

Math Planet: Algebra 2: The Quadratic Formula

For Students 9th - 10th Standards
Gain an understanding of how to solve a quadratic equation using the quadratic formula by viewing examples and a video lesson. [2:23]
eBook
Math Planet

Math Planet: Algebra 2: How to Solve Quadratic Equations

For Students 9th - 10th Standards
Gain an understanding of how to use factoring to solve a quadratic equation by viewing examples and a video lesson. [2:13]
Activity
Texas Instruments

Texas Instruments: Exploring the Vertex Form of the Quadratic Function

For Teachers 9th - 10th
Students explore the vertex form of the parabola and discover how the vertex, direction, and width of the parabola can be determined by studying the parameters. They predict the location of the vertex of a parabola expressed in vertex form.
Activity
Integrated Publishing

Integrated Publishing: Graphical Interpretation of Roots

For Students 9th - 10th Standards
This site compares the graphs of three quadratic functions, and explains how certain characteristics of the graph relate to properties of the equations and their solutions. Contains practice problems, including real-world examples.
Unit Plan
CK-12 Foundation

Ck 12: Applications of Function Models

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] A collection of resources for exploring word problems using function models.
Unit Plan
Khan Academy

Khan Academy: Fitting Quadratic and Exponential Functions to Scatter Plots

For Students 9th - 10th Standards
Determine if a quadratic or exponential model fits a data set better, then use the model to make a prediction. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Lesson Plan
Annenberg Foundation

Annenberg Learner: Insights Into Algebra 1. Workshop 4

For Teachers 9th - 10th Standards
Determine the height of a bouncing ball by creating a quadratic function for each.
Activity
Texas Instruments

Texas Instruments: Math Today Challenge Heat Watch

For Teachers 9th - 10th
Students will explore linear & quadratic functions to determine how they model the relationship between air temperature & heat index. Once the models are determined students will make predictions about heat index when given a...
Activity
Texas Instruments

Texas Instruments: Mc Dougal Littell Algebra 1: Find Minimum and Maximum

For Teachers 9th - 10th Standards
Students can use the TI-84 Plus family to find the minimum or maximum and the zeros of quadratic functions.
Unknown Type
Khan Academy

Khan Academy: Algebra 2: Compare Features of Functions

For Students 9th - 10th Standards
Compare various features between two functions, each represented in a different way. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Unknown Type
Khan Academy

Khan Academy: Graph Quadratics in Standard Form

For Students 9th - 10th
Graph quadratic functions given in the standard form.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Applications of Function Models

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students draw a scatter plot of data, find and draw the function that best fits that data, and make predictions from that information. Students watch...
Activity
Texas Instruments

Texas Instruments: Exploring the Parabola and Its Equation Part 1 and @

For Teachers 9th - 10th
Starting with y=x^2 going all the way to (in part 2)y=ax^2+bx+c, how do changes in the quadratic equation/function change the appearance of the parabola.
Handout
Purple Math

Purplemath: Completing the Square: Solving Quadratic Equations

For Students 9th - 10th Standards
Purplemath gives several examples which clearly show the process of completing the square to find the maximum and minimum solutions to a quadratic equation.
Activity
Texas Instruments

Texas Instruments: Math Today for Ti Navigator System Humidity Makes Air Feel

For Teachers 9th - 10th
Using data from the USA TODAY graphic,"Humidity makes air feel even hotter," students will explore quadratic and cubic functions to determine how well they model the relationship between air temperature and heat index. When the models...
Activity
Math Medics

S.o.s. Math: Algebra

For Students 9th - 10th Standards
This lesson provides basic instruction on the major concepts in algebra. Content includes a focus on fractions, units of conversion, complex numbers, quadratic equations, factorization and roots of polynomials, solving equations, systems...
PPT
Sophia Learning

Sophia: Comparing Linear, Quadratic, and Exponential Functions

For Students 9th - 10th Standards
Linear, quadratic and exponential functions have different graphs, equations, and characteristics. In this tutorial, compare the shape of linear, quadratic, and exponential curves on a graph, and explore how to identify a function as...
Activity
Texas Instruments

Texas Instruments: Linear and Quadratic Approximations

For Teachers 9th - 10th Standards
In this activity, students explore the linear and quadratic approximations of a logarithmic function and find properties the functions have in common.
Activity
Wolfram Research

Wolfram Math World: Quadratic Formula

For Students 9th - 10th Standards
This MathWorld site provides the quadratic formula, giving the roots of a quadratic equation, as well as an alternative form of the equation.
Activity
Texas Instruments

Texas Instruments: Prodigious! Quadratics and Free Fall Motion

For Teachers 9th - 10th
Uses the movie "October Sky" as an introduction to the study of free fall motion functions. Acts a summation activity to a quadratic unit in Algebra. Solve quadratic equations by graphing, factoring, and the quadratic formula.
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Elias Saab

Math Drills: Roots of Polynomial Functions Quiz

For Students 9th - 10th Standards
An interactive quiz which provides students with a problem involving a polynomial function to be solved. Students input their solution and have the program evaluate it. Hints are available if the student needs them, and explanations are...
Lesson Plan
Alabama Learning Exchange

Alex: Discover the Roots of a Polynomial Function

For Teachers 9th - 10th
In this lesson, learners will be re-introduced to the Four Step Problem - Solving Plan. The plan will be used as a 'checks and balance' tool for discovering the roots (solutions) of polynomial functions. Students will: *Explore the...

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