Lesson Plan
Curated OER

Representing Quadratics

For Teachers 8th - 11th
Students represent quadratic equations using different methods. In this algebra lesson, students solve quadratics using substitution, elimination and graphing. They relate quadratics to the real world.
Lesson Plan
Curated OER

Introduction to Conic Sections

For Teachers 9th - 12th Standards
Learners slice cones and identify the different conics formed. They then derive the formula to solve problems involving cones. Pull out the TI calculators to visualize the slicing and the different parts and properties created.
Worksheet
Curated OER

Sudoku Puzzle with Derivatives

For Students 10th - 12th
In this Sudoku puzzle worksheet, learners use basic derivative formulas, the chain rule and implicit differentiation to solve given problems.  This six-page worksheet contains 26 problems. Answers are provided on the last page.
Lesson Plan
Curated OER

Using Factoring to Solve Equations

For Teachers 11th
Eleventh graders use factoring to solve 44 different problems involving area, intercepts, quadratic equations, and functions.
Lesson Plan
Curated OER

Quadratic Equations and Binomial Square Theorem

For Teachers 9th - 11th
Students factor quadratic equations. In this algebra lesson, students apply the binomial square theorem to solve quadratics. They complete the square and use the complex number system to solve for the roots.
Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Vertex of a Parabola

For Students 9th - 10th
Find a quick, concise explanation of the vertex of a parabola. Examples are given and clearly explained.
Activity
Texas Instruments

Texas Instruments: Standard Form of a Parabola

For Teachers 9th - 10th
This activity will help students work with the standard form of a parabola y = a(x - h)^2 + k by writing an equation given the vertex and a point.
Activity
Texas Instruments

Texas Instruments: Vertex Form of a Parabola

For Teachers 9th - 10th
This set of multiple choice questions asks students to identify parabolas in vertex form, to find the vertices of parabolas, and to determine if their graphs open up or down. Solutions are included.
Activity
Purple Math

Purplemath: Completing the Square: Finding the Vertex

For Students 9th - 10th Standards
Demonstrates step-by-step how to complete the square to find the vertex of a parabola. Thorough descriptions of each problem.
Handout
Science Struck

Science Struck: Real Life Examples of a Parabola

For Students 9th - 10th
Explains what a parabola is and the vocabulary used to describe one and gives several examples of parabolas in real life.
Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Graphing Parabolas

For Students 9th - 10th Standards
Dr. Math helps a student with the plotting and with finding the vertex and line of symmetry of a parabola.
Unit Plan
Concord Consortium

Concord Consortium: Quadratic Functions in Vertex Form

For Students 9th - 10th
Given the equation of a quadratic function in vertex form, students learn to identify the vertex of a parabola from the equation, and then graph the parabola.
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
Texas Instruments

Texas Instruments: Investigating the Parabola in Vertex Form (Y = Ax2

For Teachers 9th - 10th
In this activity, students investigate the standard form of the quadratic function, y = ax^2 + bx + c. They investigate the changes on the graph of a quadratic equation that result from changes in A, B, and C. They also locate the vertex...
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Quadratic Functions and Their Graphs

For Students 8th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] Learn the anatomy of the graph of a quadratic function.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Graphs of Quadratic Functions in Intercept Form

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Understanding the graphs of a parabola given equations. Students examine guided notes, review guided practice, watch instructional videos and attempt practice problems.
Activity
Texas Instruments

Texas Instruments: Transforming Parabolas

For Teachers 9th - 10th Standards
1. Students will be able to review how to find the vertex of a parabola using a graphing calculator. 2. Students will be able to observe the relationship between the values of a, h and k and the graph of a parabola in vertex form. 3....
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Identification of Quadratic Models

For Students 8th
[Free Registration/Login may be required to access all resource tools.] Understanding the equations of parabolas
Handout
Interactive Mathematics

Interactive Mathematics: Find Equation of a Quadratic Function From Its Graph

For Students 9th - 10th
A detailed explanation of how to find a quadratic equation from its graph using different methods, including using software.
Unit Plan
Texas Education Agency

Texas Gateway: Analyzing Graphs of Quadratic Functions

For Students 9th - 10th Standards
Given the graph of a situation represented by a quadratic function, the student will analyze the graph and draw conclusions.
Website
National Council of Teachers of Mathematics

The Math Forum: Ask Dr. Math: Parabola

For Students 9th - 10th Standards
Dr. Math, in a reply to a student's question, explains how to find the location of the vertex and focus, calculate the distance between the focus and vertex, as well as identify the axis of symmetry and the directix.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Quadratic Functions and Their Graphs

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Graph and compare graphs of quadratic functions in the coordinate plane.
Unit Plan
Khan Academy

Khan Academy: Features of Quadratic Functions

For Students 9th - 10th Standards
Find the zeroes ("roots") of quadratic functions and the vertex of their parabolas. Functions are given in standard, vertex, and factored form. Students receive immediate feedback and have the opportunity to try questions repeatedly,...
Unit Plan
Khan Academy

Khan Academy: Features of Quadratic Functions: Strategy

For Students 9th - 10th Standards
Identify the form of a quadratic function that immediately reveals a given feature of that function. Features in question are the y-intercept of the graph, the zeroes ("roots") of the function, and the vertex of the parabola. Students...