This paper discusses TI-89 and TI-92 graphing calculators as a tool for teaching mathematics. How this technology is likely to affect the teaching of mathematics and the role of technology in general is described. Discussion begins with a comparison of two areas, mathematics and moving/transportation, from a technological aspect, and focuses on the benefits of teaching with this technology such as trivialization, experimentation, visualization, and concentration. Discussion centers around the goals of mathematics education, the future of teaching mathematics, and assessment issues with this technology. (Contains 12 references.) (ASK)