Abstract
The author reports the activities and issues on the Smart Science School (SSS) for junior high students. The junior high school students have learned at Gunma National College of Technology and carried out several experiments. In this paper, study on growth of ruby crystals synthesized by familiar aluminium sources is reported. The participants learned the synthesis and characterization of the ruby crystals. Relatively large crystals were obtained with MoO3 and Li2CO3 fluxes.
