Experts recommend children to accumulate 30-60 minutes of physical activity each day, but the rates of childhood obesity and lifestyle related diseases have steadily increased. Currently, there is little evidence to suggest that web-based interventions can be an effective method to increase physical activity levels. In response to the decreasing physical activity levels we conceptualized, designed, and piloted an intervention to determine if students would use a website to track their daily step counts monitored by an electronic pedometer. Over the six-week experiment, students (N=73) voluntarily used the Log It website 87% of the time with girls averaging 4731 steps/day and boys averaging 4999 steps/day. Using Log It was a positive experience for the majority of students. Results indicate that students enjoyed wearing the pedometers as indicated by the high percentage of students who entered their steps each day. Students also reported that using Log It (72%) and/or wearing pedometers (76%) encouraged them to be more physically active. One-way ANOVA revealed all groups significantly increased their steps from baseline (p < .001) averaging a 37% increase. In light of the changes in number of steps from baseline through the different interventions, the authors chose to use self-determination theory (SDT) to discuss how computer-mediated feedback may have affected competency levels. Activities and feedback that increase feelings of competency in youth also augment their intrinsic motivation to continue with that activity (Deci & Ryan, 1985). When asked if they would use Log It in the future if they had a pedometer, 62% of students replied yes. 66% of students also felt that Log It encouraged them to be more physically active, whereas 75% of students felt that the pedometers encouraged them to be more active. Using either a pedometer or Log It, these “surrogate feedback providers” were able to significantly increase physical activity levels and encourage students using individually-referenced norms. Log It was motivating because it was fun and allowed them the freedom to dictate their input, goals, progress, and feedback. Log It can be economically adapted to existing elementary physical education programs or incorporated into the classroom. Physical educators and health-care professionals should include web-based interventions to encourage youth to become more physically active.Keyword(s): physical activity, research, technology