PROJECTIVE GEOMETRIC ALGEBRA Zachary Leger and Stephen Mann University of Waterloo, Canada In this extended abstract, we detail the creation of PGABLE, a Matlab package to aid in the teaching of Projective Geometric Algebra (PGA). We begin by discussing the precursor to PGABLE created in 1999, GABLE, and motivating the creation of PGABLE. Next, we discuss the various internal aspects of GABLE that needed to be modified to create PGABLE. We then describe the PGABLE tutorial we created to teach PGA.