This paper presents a system to support learning within museum for children as a novel application of Kinect based human sensing system. The system measures the physical movement of the learner using a Kinect sensor, and provides a sense of immersion in the paleontological environment by adapting the surroundings according to these movements. As the first stage of this project, we have developed a prototype system that allows learners to experience the paleontological environment. Here, we evaluated the performance of the sensor of BESIDE in order to confirm whether or not this system can put into practice BESIDE at the museum. This paper summarizes the current system and describes the evaluation results.