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Unit Plan
Cuemath

Cuemath: Hypotenuse Leg Theorem

For Students 9th - 10th
Explore the world of the hypotenuse leg theorem in this mini-lesson. Provides a definition, examples, and practice questions with answers that help with understanding their properties.
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Lesson Plan
OER Commons

Oer Commons: Mars: Proving the Pythagorean Theorem

For Teachers 9th - 10th Standards
This lesson is intended to help you assess how well learners are able to produce and evaluate geometrical proofs. PowerPoint slides are included with the lesson.
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Unknown Type
Houghton Mifflin Harcourt

Holt, Rinehart and Winston: Homework Help Independent Practice: The Pythagorean Theorem

For Students 9th - 10th
Get independent practice working with the Pythagorean Theorem. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
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Activity
Math.com

Math.com: Pythagorean Theorem and Right Triangle Facts

For Students 6th - 8th Standards
The lesson investigates right triangles and the Pythagorean Theorem. Definitions, examples, and a worksheet are available.
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Unit Plan
Wolfram Research

Wolfram Math World: Distance

For Students 9th - 10th
MathWorld.com gives a formula for finding distance using the Pythagorean theorem. The formula for finding the distance between two points in Euclidean space is given on this page. The page has links to related topics.
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Activity
Shodor Education Foundation

Shodor Interactivate: Interactive: Pythagorean Explorer

For Students 6th - 8th Standards
Students find the length of a side of a right triangle by using the Pythagorean Theorem and then check their answers.
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Activity
Shodor Education Foundation

Shodor Interactivate: Squaring the Triangle

For Students 6th - 8th Standards
Students explore the relationship between the Pythagorean Theorem and right triangles. Teacher resources are included.
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Activity
Texas Instruments

Texas Instruments: Applying the Pythagorean Theorem

For Teachers 9th - 10th
students can use the Pythagorean Theorem and distance formula to determine unknown measurements.
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Activity
Texas Instruments

Texas Instruments: Numb3 Rs: To Pythagoras and Beyond

For Teachers 9th - 10th Standards
Based off of the hit television show NUMB3RS, this lesson has students discover the Pythagorean relationships of different triangle types. By the end of the lesson, students should be able to take three given side lengths and compute...
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Activity
Texas Instruments

Texas Instruments: Science Today Scientists Go Below to Find

For Teachers 9th - 10th
In this activity, using the USA TODAY Infograph "Scientists go below to find," students will graph a city's location by using latitude and longitude coordinates. Students will determine the distance to travel between cities using a...
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Activity
Texas Instruments

Texas Instruments: From a Distance, You Can See It!

For Teachers 9th - 10th
In this activity, students find the distance between points using common fractions and decimals, with the concepts of midpoint and distance. They also learn to solve problems using the Pythagorean theorem.
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Activity
Texas Instruments

Texas Instruments: The Pythagorean Theorem and Classifying Triangles

For Teachers 9th - 10th Standards
Students can use the converse of the Pythagorean Theorem to predict a triangle's classification. The Cabri Jr. App on the TI-83+/84+ family will be used to create triangles and find their measurements. Adobe PDF lab worksheets are included.
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Activity
Texas Instruments

Texas Instruments: Real Numbers

For Teachers 9th - 10th Standards
Students learn to identify real numbers as rational numbers and irrational numbers. They review rational numbers as repeating decimals, and irrational numbers as non-repeating decimals. They also review commutative, associative,...
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Activity
Texas Instruments

Texas Instruments: Mc Dougal Littell Geometry: Converse of Pythagorean Theorem

For Teachers 9th - 10th
Students can use the TI-84 Plus family with Cabri Jr. to determine if the converse of the Pythagorean Theorem is true.
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Activity
Texas Instruments

Texas Instruments: Proof of the Pythagorean Theorem Using Transformations

For Teachers 9th - 10th Standards
In this activity, students will explore visual proofs of the Pythagorean Theorem using area and transformations. They will use the Cabri Jr. app to perform translations on the squares constructed on the two legs and the hypotenuse of a...
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Activity
Texas Instruments

Texas Instruments: Exploring the Pythagorean Theorem and Its Applications

For Teachers 6th - 8th Standards
Students discover the Pythagorean Theorem by exploring right triangles using Cabri Jr. They apply the Pythagorean Theorem to real-world problems. Also, students create a scatter plot of the data and find an equation that fits the data.
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Activity
Texas Instruments

Texas Instruments: Going Out of Business

For Teachers 6th - 8th Standards
In this activity, students use the Pythagorean theorem to compute the diagonals of rectangles.
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Lesson Plan
Science Education Resource Center at Carleton College

Serc: Pythagorean Theorem Investigations

For Teachers 9th - 10th Standards
In this activity, learners will gain an understanding of the Pythagorean theorem and will recognize the variety of ways in which theorems can be proved algebraically, geometrically and visually.
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Handout
Wikimedia

Wikipedia: Pythagoras

For Students 9th - 10th
Encyclopedia article about Pythagoras that looks at his life, accomplishments, and his influence on other mathematicians. Includes pictures and links to additional information.
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Website
Northeast Parallel Architectures Center, Syracuse University

Npac Reu Program: The Distance Formula

For Students 9th - 10th Standards
Northeast Parallel Architecture Center, Syracuse University, provides a lesson on finding the distance between two points using the coordinates and Pythagorean Theorem.
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Activity
Northeast Parallel Architectures Center, Syracuse University

Npac Reu Program: Distance Formula

For Students 9th - 10th Standards
Northeast Parallel Architectures Center at Syracuse University provides a brief description of the distance formula, including two worked examples. One example, shows how the distance formula connects to the Pythagorean Theorem.
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Handout
Wikimedia

Wikipedia: Pythagorean Triple

For Students 9th - 10th Standards
This Wikipedia article explains a Pythagorean triple -- the triangle formed by three positive integers. Includes examples and hyperlinked terms.
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Activity
Math Medics

S.o.s. Math: The Polar Form of a Complex Number

For Students 9th - 10th Standards
This lesson from S.O.S. Math provides great information on the polar form of a complex numbers. It has many formulas and examples, and it also discusses the polar coordinates as well. Links are provided for additional subjects.
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Lesson Plan
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: El Teorema De Pitagoras

For Teachers 9th - 10th Standards
Interactive resources and activities that could be used in the classroom either as an introduction or review to a unit dealing with the Pythagoras Theorem. [Requires Java.]