This study provides an analysis of a five-year time series chemical composition of the bulk deposition (2009–2013), collected within a farm surrounded by industrial and urban settlements in a semi-rural area of the Po Valley, with the aim of characterizing potential emission sources affecting precipitation composition at the site. Therefore, the teaching material civic education is highly effective to improve the civic knowledge of students. In the effectiveness experiment shows that there are differences and get it if the development between pre-test and posttest in the experiment class is more than control class. The validation result in product development trials indicates appropriateness. It shows that the civic material based on PBL is needed in the teaching learning process as a companion book. The result of this research is the necessary analysis on preliminary study. The method of this research uses Borg and Gall techniques modified by Sukmadinata which consists of three namely preliminary study, product development, and product effectiveness test. This book is written based on PBL syntax as a student learning activity. The purpose of this research is to know the teaching material condition in classes and the need of PBL-based on civic education to know the development of PBL-based civic education to know the effectiveness of PBL-based civic education for fourth-grade students of elementary school as textbooks to improve students’ civic knowledge.
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