Geometric Construction, continued

Readers of this blog probably realize that I’m very much into geometric construction. This is in part related to my general interest in puzzles, in and out of the classroom. (In my other life, I construct¬†cryptic crosswords.) My first math education publications were books of geometric puzzles for grades K-10. My pentomino puzzle books stayed… Continue reading Geometric Construction, continued


5 October 2019: Along with Kim Seashore and perhaps others, I will be a presenter at Lessons from Lew, a free professional development session. We will share Lew Douglas’s lessons on trigonometry, the golden ratio, symmetric polygons, and more. 11:00 to 12:15, at Longfellow Middle School in Berkeley. Register here. Links to an expanded version… Continue reading News