PROMOTING STUDENTS’ CONCEPTUAL CHANGE ON THE CONCEPT OF ECOSYSTEM THROUGH PDEODE (PREDICT-DISCUSS-OBSERVE-EXPLAIN-DISCUSS-EXPLAIN) TEACHING STRATEGY . JPMIPA [Internet]. 2016 Apr. 21 [cited 2026 Jul. 1];21(1):52-60. Available from: https://ejournal-science.upi.edu/jpmipa/article/view/705