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Unit Plan
Khan Academy

Khan Academy: Solving Quadratics by Completing the Square

For Students 9th - 10th Standards
Practice some multiple-choice problems solving quadratics by completing the square.
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Handout
University College London

University College London: Quadratic Equations

For Students 9th - 10th Standards
This site offers an introduction to quadratic equations. Includes hyperlinked terms and examples.
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Activity
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: La Function Cuadratica. Parabolas.

For Students 9th - 10th Standards
This is an interactive activity to explore the second-degree polynomial function. It goes from the simplest case, y=x^2 to different translations.
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Unit Plan
Texas Education Agency

Texas Gateway: Analyzing the Effects of Changes in "A" on the Graph Y=ax^2 + C

For Students 9th - 10th Standards
Given verbal, graphical, or symbolic descriptions of the graph of y = ax^2 + c, the student will investigate, describe, and predict the effects on the graph when "a" is changed.
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Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Polynomial and Rational Functions

For Students 9th - 10th Standards
Hotmath provides 20 practice problems that relate to polynomial and rational functions. Each of the practice problems include a step-by-step guide for solving.
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Activity
Help Algebra

Help algebra.com: Quadratic Equations

For Students 9th - 10th Standards
After defining a quadratic equation, this site shows you what the graphs of quadratics look like and how to use the graphs to determine the numbers of solutions to the quadratic. A brief explanation is included on how graphing...
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Activity
Help Algebra

Help algebra.com: Solving Quadratics by Factoring

For Students 9th - 10th Standards
Tips for factoring quadratics are given and demonstrated in several examples. The examples include quadratics that have both two and three terms.
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Handout
Purple Math

Purplemath: Solving Quadratic Equations by Factoring

For Students 9th - 10th
Demonstrates how to solve quadratics using factoring (that is/the Zero-Product Property). Provides worked examples/and warnings about common mistakes.
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Unit Plan
Khan Academy

Khan Academy: Quadratic Formula

For Students 9th - 10th Standards
Solve quadratic equations using the quadratic formula. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Number of Solutions of Quadratic Equations

For Students 9th - 10th
Analyze quadratic equations in order to determine how many different real number solutions they have. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Quadratic Word Problems (Standard Form)

For Students 9th - 10th
Solve real-world word problems that involve quadratic models. In this exercise, that models are given in standard form. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
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Unit Plan
Khan Academy

Khan Academy: Solve Quadratics by Factoring (Intro)

For Students 9th - 10th
Solve quadratic equations of the form x^2+bx+c=0 that can be rewritten according to their linear factors. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Solve Quadratics by Factoring

For Students 9th - 10th Standards
Solve quadratic equations of the form ax^2+bx+c=0 that can be rewritten according to their linear factors. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Quadratics by Taking Square Roots

For Students 9th - 10th
Analyze the process of solving a quadratic equation by taking the square root. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
Khan Academy

Khan Academy: Quadratics by Taking Square Roots

For Students 9th - 10th Standards
Solve quadratic equations of the form (x+a)squared-b=0. These can be solved using square roots. For example, solve (x-5)squared-4=0. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
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Unknown Type
Other

Kuta Software Llc: Algebra Worksheets

For Teachers 9th - 10th
Free downloadable algebra worksheets covering the basics, equations, linear equations, inequalities, trigonometry, exponents, polynomials, quadratic functions, radical expressions, rational expressions and word problems.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F Bf Skeleton Tower

For Teachers 9th - 10th
This problem is a quadratic function example where students analyze how many cubes are used to build a multi-dimensional tower of different heights. Aligns with F-BF.A.1.
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Interactive
Shodor Education Foundation

Shodor Interactivate: Two Variable Function Pump

For Students 9th - 10th Standards
Enter two complex numbers (z and c) as ordered pairs of real numbers, then click a button to iterate step by step. The iterates are graphed in the x-y plane and printed out in table form.
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Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factorization of Quadratic Expressions

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] Factor quadratic expressions in which the coefficients a, b, and/or c are negative.
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Unit Plan
Khan Academy

Khan Academy: Equations & Inequalities Word Problems

For Students 9th - 10th Standards
HSA-CED.A.1: Interactive resource which 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....
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Activity
Texas Instruments

Texas Instruments: The Slope of the Tangent Line (Part2)

For Teachers 9th - 10th
In this activity, students graph the cubic and quadratic functions. They also graph the slope values of the tangent lines for each of the function graphs.
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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...
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Activity
Texas Instruments

Texas Instruments: What Goes Up Must Come Down

For Teachers 9th - 10th Standards
In this activity, students use the calculator to solve quadratic equations. They use the quadratic formula to determine the vertex and the x-intercepts of the graph of a quadratic function.
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Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: F If, a Rei Springboard Dive

For Teachers 9th - 10th
This problem is about the changing height of a diver en route to the water. It gives students experience translating questions about a real-world context into mathematical questions about a quadratic function and then answering those...

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