Which mathematical software product first introduced dynamic geometry visualization that allowed students to manipulate geometric constructions in real-time, leading to its adoption by over 70% of US high schools?

The intersection of mathematics and retail innovation has led to revolutionary products that changed how we teach and learn complex mathematical concepts. Educational technology companies have invested heavily in creating tools that make abstract mathematical ideas more accessible. This poll tests your knowledge about a significant product innovation that transformed mathematical education and its market adoption.

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The Geometer's Sketchpad (1991)
Maple (1982)
GeoGebra (2001)
Mathematica (1988)