#Calculus teachers! Create a solid of revolution by rotating two freehand functions around an axis in less than 5 minutes in @GeoGebra #mtbos #iteachcalculus #iTECHmath @HamiltonCoESC https://t.co/pJnREQpxJyhttps://t.co/VLSWTvTzkW pic.twitter.com/2149jsmLck
— Steve Phelps (@MathTechCoach) July 17, 2019