Physical activity is essential for children and adults to counteract the negative health outcomes related to a sedentary lifestyle. Despite widely publicized recommendation and information about physical activity the problem of excessive physically inactivity prevails in our society. The purpose of this study was to conduct a context functional analysis to identify outdoor activity contexts that engendered higher levels of MVPA and to adopt Dunlap, DePerczel, Clarke, Wilson, Wright, White, and Gomes’ (1994) methodology by utilizing an ABAB reversal design to determine if choice making influences levels of moderate-to-vigorous physical activity (MVPA) in six preschool-aged children. Results of the context functional analysis showed that fixe...