I’ve been teaching since 1976, ranging from six-year-olds (as a volunteer) to graduate students. I wrote the three-volume Computer Science Logo Style series for teenagers, developed (with UC Berkeley students) the Berkeley Logo interpreter, taught a SICP course at Berkeley for 25 years, wrote (with Matthew Wright) the SICP “prequel” Simply Scheme, developed (with Daniel Garcia and UC Berkeley students) the “Beauty and Joy of Computing” course for non-CS majors, and helped develop (with the brilliant Jens Mönig) the Snap! visual programming language (Scheme disguised as Scratch) used in the BJC course. Although theoretically retired, I’m currently working with colleagues at Education Development Center to turn BJC into a curriculum package usable in high schools, especially for nontraditional CS students (women and minorities).