Last week’s winner was Roy Samuelson with A = 42 square units. Jeff Smith is a former Math teacher and a retired US Navy Lieutenant Commander. Reach him at [email protected].

Our opening quote contended that Venn diagrams are overrated. Even those who agree must admit that they have a curious allure. Take the sets of interesting topics in logic, in geometry and in ...

Strike the wheel against the ground to set it spinning at top speed. Hold to keep the wheel spinning. Can be used while walking to push the armament into enemies.