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Geometry Step-by-Step From the Land of the Incas
Innovative high-school geometry site.
Grade Level: 9-12

Geometry Step-by-Step from the Land of the Incas was created by Antonio Gutierrez and provides an “eclectic mix of sound, science, and Incan history intended to interest students in Euclidean geometry.” Included are problems, puzzles, quizzes, and much more.
This “Flashy” site is colorful and user-friendly. The content is organized into many categories that are available in the top navigation bar. The main text of the front page also lists new additions. Flash Player, Java 1.3 or higher and JavaScript are required.

This is a rich resource for teachers and students of geometry. Teachers can use the problems, quizzes, puzzles, proofs, and animations as a great supplement to the geometry curriculum. Students will enjoy learning the theorems and perhaps understand the concepts better by using this interactive site. The Problems section contains dozens of problems that include step-by-step proofs. Many of the problems have corresponding interactive puzzles. The quizzes offer interactive practice with SAT techniques, matching exercises, crosswords, and more. Gutierrez uses photos to investigate geometric forms in such places as Cuzco and Machu Picchu. He also uses cultural artifacts such as the Ouipu (a system of knotted cords used by the Incas to store massive amounts of information), Nazca Lines that appear engraved in the surface of the desert plateaus, a Flash movie about Peru, and much more. Included is a list of quotes that relate to geometry and a section for inspiration that offers animations of such poetic selections as "The Road Not Taken" by Robert Frost.


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