Abstract: We have developed a lunar surface navigation system with a combination of tabletop augmented reality and virtual environments, which facilitates collaboration between children and parents with active learning behaviors. It visualizes multimedia data using geographic locations in the areas of the lunar surface that were explored by NASA Apollo missions. We designed scenarios based on real episodes during exploration activities and assumed a quasi-role play with children acting as astronauts and their parents acting as mission commanders. We did a user study to investigate the properties of the lunar surface navigation system. The experiment was done in a practical setting at an exhibit in the Modern Industrial Science Museum. The results suggested that the lunar surface navigation system could provide a learning environment where children and their parents could initiatively learn together.