The advent of dynamic geometry software has changed the way students draw, construct, and measure by using virtual tools instead of or along with physical tools. Use of technology in general and of dynamic geometry in particular has gained traction in mathematics education, as evidenced in the Common Core State Standards for Mathematics (CCSSI 2010).
Taehoon Choi and Dae S. Hong
Using iPad's GeoGebra app with the Snell-Huygens method significantly improves Archimedes's process of approximating Pi.
Adam Poetzel, Joseph Muskin, Anne Munroe, and Craig Russell
Using simple materials, a Mathematica software application, and their knowledge of function transformations, students design and create real mathematical sculptures.
Michael Todd Edwards, Suzanne R. Harper, and Dana C. Cox
The Meeting for Lunch problem exemplifies how standards provide more than an outline of daily activities for an entire school year.
Using a 6-inch-square sheet of paper and a simple rule for creating a polygon, students can explore interesting area and perimeter problems.
Samuel Obara and Zhonghong Jiang
Applying Zometool, vZome software, and The Geometer's Sketchpad to tetrahedrons nested in cubes enhances students' spatial visualization skills.
S. Louise Gould
Pop-up polyhedra–three-dimensional models that can be stored for future reference–are easily constructed using The Geometer's Sketchpad and give students experience in using transformations in the plane.
Anna E. Baccaglini-Frank
In this activity, students learn to make conjectures about properties that do not change.
Dae S. Hong
This article shows how to explore the golden ratio using GSP. Golden rectangles, spirals, triangles, and pentagons are also discussed.
Terrie T. Poehl
Voronoi diagrams, graph theory, and geography are used to explain and demonstrate sample ground and air transportation networks.