For people of a certain age, the phrase "math worksheet" may conjure images of pieces of paper with wet purple ink, freshly mimeographed. For others, they might just say: "What's a mimeograph?" Both groups will find things to like about this website, which brings together a number of math worksheets for general use. The site is maintained by Scott Bryce, and while some of the materials require a...

This "web museum" devoted to vintage calculators shows "the evolution from mechanical calculator to hand held electronic calculator." Some items featured include: Mechanical and early electronic desk calculators, "strange hand-held calculators," and articles, photographs, and databases from the archives of the International Association of Calculator Collectors. A history of the technology and...