Understanding of concepts in science learning is very important in order to avoid students misconceptions and is one of the requirements for success in learning science. the purpose of this study was to determine the extent of students' understanding of the concept and the ability to decrease the quantity of misconceptions by using learning strategies PDEODE at primary school level precisely in one of the Government Elementary School in the city of Bandung. The method used is quasi-experimental with pretest-posttest control group design. The process of learning happens in the classroom control with traditional learning in the classroom and experiment with strategies PDEODE. Learning takes place during the four meetings of each class and in each of the activities carried out are also observations about the enforceability of the learning activities as described in the steps in the lesson plan. The results showed an increased understanding of the concept as well as a decrease in the quantity of students' misconceptions after learning implemented. T test results showed that between ttabel predetermined with the calculation results tcount discovered show that thitung thitung<ttabel and means Ho rejected. Furthermore, students' responses to the use PDEODE strategy is positive. Students feel more involved in the learning process and thus deemed not to saturate a given learning can improve understanding of concepts and reconstruct his conception so in accordance with the scientific concept indeed.