Technology Tips: January 2002

We are especially pleased to offer a technology tip for Hewlett-Packard users this month. Colin Croft, a colleague from Australia, shows some potential pitfalls in using the HP—or any other calculator, for that matter—to evaluate limits. Next, coeditor Paul Gosse gives an inside look at Graph Databases (GDBs). If you have not used a GDB before, you might try to do so after you read his suggestions. In our third piece, Bob Ruzich illustrates some nice calculus extensions of the classic “ball bounce with a motion detector” activity. Appropriately enough, our featured Web site this month is Colin Croft's own site for HP calculator users.