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The purpose of this paper was to explore (1) the§facilitative effect of the use of a graphing§calculator (gc) on mathematical problem solving in§the context of an adult (18+) college algebra class;§(2) the connection between mathematics self-efficacy§(mse) and college students academic performance by§using the gc as a tool in the college algebra class,§(3) the effects of 6-week interventions designed to§increase mse; and (4) the relationship between mse§and individuals learning styles. The results show§that gc practice does benefit problem solving,§particularly when the problem requires understanding§of graphic representation. Higher accuracy and mse§results showed that the use of gc successfully and§positively promotes individuals mse, and,§specifically, algebra classes. On individuals §learning styles, visual learners do obtain a§significant benefit from the use of gc s and higher§mse when compared to balanced learners.