Technology Tips: April 2002

This month, Maurice Burke kicks off the “Technology Tips” column with a TI-92–enhanced investigation of repeating decimals. In this article, Burke shows how to circumvent the default number of digits stored and displayed by the calculator. Next, Stephanie Kolitsch reveals an error in the sum(seq) command on many of the Texas Instruments calculators. She traces the mistake to an error in the thirteenth or fourteenth decimal place and then shows how to avoid this problem. Bob Ruzich returns with his third piece in the series “The Arithmetic of Calculus.” This time, Ruzich shares a CBL 2/CBL activity that involves voltage and that leads students to a deeper understanding of the average value of a function. Our featured Web site is an interactive, multimedia exhibition showing the uses of mathematics in several career fields.