This article describes the application of technology to the van Hiele Model for Geometric Thought to increase the van Hiele levels in an undergraduate Euclidean geometry course. Following the model with activities and phase-based instruction, students showed significant gains in the van Hiele levels in five different sections over the course of five semesters. By including the use of the CanFigureIt website, a Desmos activity, the Geometer's Sketchpad and WebSketchpad during the fifth semester, students showed the largest gains in levels as measured by the van Hiele test.