-
•Develops The Geometer's Sketchpad software and curriculum for Key Curriculum Press and KCP Technologies (since 1992)
-
•Frequently gives Sketchpad presentations and workshops at NCTM and other venues
-
•Taught mathematics and computer science in Philadelphia high schools (1968—1988)
-
•Received Teacher of Excellence award from School District of Philadelphia (1986)
-
•Earned master's degrees in computer science (1984) and education (1971) from the University Of Pennsylvania
-
•Graduated Magna Cum Laude and Phi Beta Kappa with a double major in chemistry and physics from Harvard University (1968)