Earlier this year, [Dan Maloney] went inside mechanical calculators. Being the practical sort, [Dan] jumped right into the Pascaline invented by Blaise Pascal. It couldn’t multiply or divide.… ...

Certainly these older calculators may still be used in courses allowing any calculator. The designation TI-89 or higher indicates the TI-89 (including the Titanium), TI-92 Plus and Voyage 200. We ...

With his QAMA calculator, inventor Ilan Samson has devised a way to get students to understand the basics of math.

Your June 28 editorial on math education ("The 'Why' of Math") certainly hit one nail on the head: This country is in serious need of math teachers with solid math training.