The Division for Chronological Research, Institute for Space-Earth Environmental Research, Nagoya University, holds a hands-on learning experience for elementary school students as a regional contribution program every year. In FY2023, our focus was on igneous rocks, one of the most important rocks for unraveling the history of the Earth. We conducted the "Invitation to Earth Science and Geochronology for upper elementary school students" program on August 3-4, 2023, with seventeen elementary students participating. On the first day, we chartered a large bus to visit the Houraijisan Natural Science Museum in Shinshiro City, Aichi Prefecture, the Shinshiro quartz diorite outcrop at Ayutaki along the Kansa River, the Hanagaki mine site distributing volcanic and sedimentary rock outcrops within the Ryoke Belt area, and the Nagashino outcrop of the Median Tectonic Line (MTL) to observe rocks and minerals in the fields. The second day comprised lectures on igneous rocks and MTL faults, hands-on crystal formation experiments, and microscopic observations of rock thin sections, fostering a comprehensive understanding of igneous rocks. These activities were performed on the second floor of the Research Institutes Building II at Nagoya University. In the afternoon, each group of students summarized their hands-on learning experience into A0-size posters. Using the posters, the students gave presentations on their learning experiences. The program was a resounding success, highlighting the enthusiasm and talent of the participating children.