摘要：This study examined the impact of Electric Circuits Kitbook on 4 th grade elementary school children's understanding of simple electric circuits. Sample consists of 100 elementary school children randomly selected from three school districts and six classrooms. Three classrooms were randomly assigned as the treatment group and the other three were assigned as the control group. The Electric Circuits Concept Inventory Test was administered to both groups after one week of science instruction. Findings suggest that the treatment group students performed significantly better than the control group students.
