In this study, we developed eight physical knowledge activities and conducted teaching reglection after the thematic instruction at kindergarten. Subjects include 43 young children from Pingtung City. There are three types of physical knowledge activities, they are (1) the movement of object (2) the change of object (3) the middle activity of object. From classroom observations and teachers' reflections, we found that most of the subjects have positive reactions towards the physical knowledge activities. Based on our findings, we propesed that these physical knowledge activities can be used in the thematic instruction at kindergarten.