This research aims to apply a depth sensor to create a human-body-sensing context for outdoor learning paths; it is conducted by incorporating both quasi-experiment and survey to compare students' cognitive learning outcome within the context and understand students' attitudes toward the context created. The result of ANCOVA indicates that the context of an introductory film activated by the depth sensor produces better cognitive learning outcome. Furthermore, the survey of students' attitudes also shows positive attitudes from both experimental and control groups toward the additional use of a human-body-sensing system activated by the depth sensor. The experimental results show the depth sensor can be used to improve conventional learning paths, i.e. with information boards only, for it enables students to participate in wireless sensing learning with their hands free from holding any device.