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Lesson Plan
Alabama Learning Exchange

Alex: The Clock Tower

For Teachers 9th - 10th
This project resulted from the collaboration of a computer aided drafting teacher (pre-engineering), Chris Bond, and a math teacher, Lee Cable, (Hewitt-Trussville High School) to provide higher math expectations in CT and real life...
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Lesson Plan
Alabama Learning Exchange

Alex: How Tall Is the School's Flagpole?

For Teachers 9th - 10th Standards
The purpose of this activity is to help students apply math concepts concerning similar triangles and trigonometric functions to real life situations. The students learn how to take these concepts and use them to find measurements of...
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Lesson Plan
Thinkport Education

Math by Design: Pythagorean Theorem [Pdf]

For Teachers 9th - 10th Standards
Use right angle concepts to solve problems amid geometric relationships.
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Website
Cool Math

Coolmath: Precalculus Basic Formulas to Know

For Students 9th - 10th Standards
This CoolMath resource provides an introduction to some Precalculus formulas.
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Activity
National Council of Teachers of Mathematics

Nctm: Illuminations: Pythagorean Review

For Students 6th - 8th Standards
Review and explore the Pythagorean Theorem.
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Activity
National Council of Teachers of Mathematics

Nctm: Illuminations: Proof Without Words: Pythagorean Theorem

For Students 9th - 10th Standards
This applet proves the Pythagorean Theorem "without words" using geometry.
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Interactive
Shodor Education Foundation

Shodor Interactivate: Squaring the Triangle

For Students 9th - 10th Standards
Learn about how the Pythagorean Theorem works through investigating the standard geometric proof.
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Interactive
Shodor Education Foundation

Shodor Interactivate: Pythagorean Explorer

For Students 9th - 10th Standards
Calculate the length of one side of an automatically generated right triangle by using the Pythagorean Theorem, and then check your answers.
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Handout
Geometry Help

Geometry Help: Right Triangles

For Students 9th - 10th Standards
Explains the basic concept of right triangles with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
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Handout
Geometry Help

Geometry Help: Pythagorean Theorem

For Students 9th - 10th Standards
Explains the basic concept of the Pythagorean Theorem with step-by-step instructions and methods for solving specific problems on your own relating to this topic.
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Unit Plan
Khan Academy

Khan Academy: The Sat Math Test: Additional Topics in Math

For Students 9th - 10th
Math questions on the test fall into different categories; one of these domains is Additional Topics in Math: questions that ask about geometry and complex numbers. The additional topics include essential geometric and trigonometric...
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Handout
Math Open Reference

Math Open Reference: Pythagorean Theorem

For Students 9th - 10th Standards
Learn about corresponding angles with this resource which offers detailed explanations, examples, and an interactive. Subjects covered include finding the right triangle. Links to related topics.
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Unknown Type
Khan Academy

Khan Academy: Pythagorean Theorem Challenge

For Students 9th - 10th
Solve real-world problems that can be modeled by right triangles, using the Pythagorean Theorem!
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eBook
CK-12 Foundation

Ck 12: Algebra Ii: 4.8 Pythagorean Identities

For Students 9th - 10th Standards
This section explores the Pythagorean Identity and how it applies to right triangles set inside unit circles, in terms of sine, cosine, and tangent functions.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 10.2 Equations of Circles

For Students 9th - 10th Standards
Derive the equation of a circle with the help of the Pythagorean Theorem.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 6.7 Applications of Similar Triangles

For Students 9th - 10th Standards
Learn how similar triangles have congruent corresponding angles and proportional corresponding sides.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 6.6 Theorems Involving Similarity

For Students 9th - 10th Standards
Learn the many theorems about triangles that you can prove using similar triangles.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 7.8 Triangles in Applied Problems

For Students 9th - 10th Standards
Explore some problems you can solve with your knowledge of triangles and trigonometry.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 7.7 Law of Cosines

For Students 9th - 10th Standards
Learn how the Law of Cosines uses the measure of angle C to provide an equation that relates the three sides of the triangle with angle C.
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eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 1.7 the Pythagorean Theorem

For Students 9th - 10th Standards
Explore and discover the Pythagorean theorem.
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Lesson Plan
PBS

Pbs Learning Media: Exponents and Radicals: Targeted Math Instruction

For Teachers 9th - 10th Standards
This lesson focuses on exponents and radicals as they apply to problems involving squares, perfect squares, and square roots.
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Handout
Quia

Ixl Learning: The Pythagorean Theorem

For Students 7th - 9th Standards
Brush up on your math skills relating to the Pythagorean Theorem then try some practice problems to test your understanding.
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Lesson Plan
PBS

Pbs Learning Media: Formulas: Targeted Math Instruction

For Teachers 9th - 10th Standards
At the end of this lesson plan about formulas, students will be able to identify and apply the correct formula for a given situation, solve for any unknown component of the formulas for perimeter, circumference, and area of regular and...
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Unit Plan
PBS

Pbs: Using the Pythagorean Theorem on the Cartesian Graph

For Students 6th - 8th Standards
In this interactive, students use logic and mathematical skill to place animals at the correct points on a Cartesian graph representing the cardinal directions. Then, they use the Pythagorean theorem to determine the distances between...