Digital Manipulatives

A presentation at Quizlet, San Francisco. October 29, 2015

Scott Farrar  |  @farrarscott  |

Former teacher at Oakland High School and Skyline High School.

Currently pursuing a Masters in Math Education at San Francisco State University.


Equidistance with Geogebra



Quadrilateral Diagonals



Distributions with Dragging


Euclid’s Pythagorean Theorem Proof

Radians and



Today’s Slides





A Selection of More Examples


Profile Picture


Even more examples, assorted



Public “GeogebraTube







Geometer’s Sketchpad


Cabri Geometry


Patty Paper Geometry – Michael Serra