The purpose of this study was to analyze how mobile technologies were incorporated and implemented in an outdoor learning activity. Two classes of primary school students participated in the experiment. Using activity theory as an analytical framework, it is found that underlying tensions provided rich insights into system dynamics and that technological affordances could be limited by mismatches between the Tools themselves, and between Tools and the ways that were used by learners or arranged by the instructor. The subtle human factors present in the use of technologies should be carefully considered. The influence of mobile devices on learner experiences in experiential learning is also thoroughly discussed.