<p>This paper presents some operation examples of finely detailed 3D miniatures combined with science TV programs, and educational materials. In the center of the operation system is a molded terrain miniature produced by rapid prototyping and projection mapping calibration methods.</p><p>In January 2015, our idea was utilized in a science TV program named “The hidden Tokyo unveiled by the investigation of undulated landform”. In this TV program, we created a 3.0x3.0 （m） scale miniature, and high-resolution projection mapping contents. This operative system was enabled by legitimate technology transfer of a patent application （patent publication number 2014-032304）. To visualize the topographical and geological features, and the history of the land development of Tokyo, we produced several pictures for projection mapping such as satellite images, traffic network, simulation results of transgression and regression from 120 000 years ago to 6000 years ago. The urban developments planned in the Edo period, Meiji period, after World War II, and today were also visualized by projection mapping. We used three calibration patterns to adjust the mapping operation.</p><p>This paper also reports on the cooperation of a handicraft kit and projection mapping miniatures. It was conducted in a scientific event named “Let's make Mt. Tsukuba and learn rapid prototyping” in Tsukuba EXPO center. In this event, each participant built up a layered miniature of Mt. Tsukuba. After completing the miniature, s/he projected topographical and geological maps on it and examined the geological features around Mt. Tsukuba.</p><p>In addition, a teaching material called “sand painting of 3D geological map series” was produced. It is a pseudo-3D geological map printed on the glue sheet, and the user can remove each geological unit separately along the cuts from the printed paper. After removal, the user can scatter several kinds of colored sand on the glue sheet, and the sand will stick onto the sheet, with each unit having its own color now. After completing the 3D sand paint, the user can compare the sand paint and the projection mapped miniature to recognize the topography and geology three-dimensionally. We also provided “coloring sheet of 3D geological map series” with the same method. These teaching materials can be used by anyone from adults to a preschool child.</p><p>Although rapid prototyping and projection mapping are a promising way of visualizing several kinds of information, it is difficult to produce attractive and intelligent contents without sustained effort by providers. As shown in this paper, science TV programs and teaching materials combined with finely detailed 3D miniatures will make it significantly easier to receive natural science information.</p>