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Materials & Resources provides a way to locate standards-aligned content through a targeted search. Locate educational resources by Keyword, Subject Area/Grade Level, Course, or by one or more specific Content Types. Please select from the appropriate filters. The Standards Aligned System includes content from several outstanding community, cultural, and educational institutions.
Please select from the appropriate filters or search by keyword.
The Standards Aligned System includes content from several outstanding community, cultural, and educational institutions. The keywords below (in italics) can be used in a Materials & Resources search to preview offerings from some of these organizations. Click on these terms to begin searching.
To access additional nationally rated LDC tasks and modules created by Pennsylvania educators, see LDC Core Tool - Library.
Title | Action | Content Type | Grades | ||||||||
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Manipulator Math Applets for the Pythagorean Theorem |
Web-based Practice
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10th Grade, 7th Grade, 9th Grade | |||||||||
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Angle Bisector by Math Open Reference Click here for more information |
Web-based Resource
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8th Grade | |||||||||
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Medians of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Midsegment of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Triangle Inequality Theorem by Math Open Resource Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Overview of Triangle Centers by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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The Circumcenter of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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The Incenter of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Orthocenter of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Circumcircle of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Euler Line by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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The Incircle of a Triangle by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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The "Ball Box" Problem by Math Open Reference Click here for more information |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade | |||||||||
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Shapes and Figures |
Lesson Plan
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Triangles |
Lesson Plan
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Proving Triangles Congruent by Definition and Side-Side-Side (SSS) |
Lesson Plan
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Extending Congruence to CPCTC |
Lesson Plan
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Similarity and Its Relationship to Congruence |
Lesson Plan
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Similar Triangles |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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Similar Triangles (Part 2) |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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Angle Game (Part 2) |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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Area and Perimeter |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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45-45-90 Triangles |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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Intro to 30-60-90 Triangles |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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30-60-90 Triangles II |
Web-based Resource
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9th Grade, 10th Grade, 11th Grade, 12th Grade | |||||||||
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