A Geometer's Sketchpad of a right triangle that illustrates Pythagorean's Theorem. Users can drag any vertex of the triangle and watch the calcualtions for the square of each leg, the sum of those squares, and the square of the hypotenuse change dynamically.


  • Mathematics > General
  • Mathematics > Geometry
  • Mathematics > Measurement

Education Levels:

  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10


sketchpad geometry pythagorean triangle



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License Deed:

Creative Commons Attribution 3.0


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Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2008-11-28.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 3

Reviewer Comments:

This resource is one unit in a series of lessons on Nigeria submitted by the World Affairs Council. The unit has background information, clear objectives, detailed procedures, and all of the necessary handouts to implement the unit. All of the materials are excellent. The content is current, accurate, and accessible to students at the recommended grade levels. There are a variety of different activities to engage students in learning about Nigeria and the challenges it is facing. Some of the highlights include an introductory activity on conflict, a "What Do You Know About Nigeria?" quiz, a PowerPoint with powerful images of Nigeria, and a research assignment on different aspects of conflict in Nigeria. The entire unit is immediately useful in a classroom and many of the handouts and activities could also be stand alone lessons integrated into various classes such as Global Issues, World History, or Economics. There are also a lot of relevant links included in the lesson that could be used to further develop the lessons.

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