eng Science and Education Publishing American Journal of Educational Research 2327-6150 2018-05-26 6 6 741 748 10.12691/education-6-6-24 EDUCATION20186624 article Chu Van Tiem chuvantiemsp2@gmail.com 1 Dao Thi Viet Anh 1 Nguyen Thi Thanh Chi 2 Faculty of Chemistry, Hanoi Pedagogical University 2, Vinh Phuc, Vietnam Faculty of Chemistry, Hanoi National University of Education, Hanoi, Vietnam Currently, Vietnam's Ministry of Education and Training is implementing significant reforms in national general education. One of the main goals of new general education curriculum is to develop students' capacity. This paper presents findings of the research on the development of problem-solving capacity through the use of Project-based Learning Method and Problem - based Learning Method in the teaching of integrated natural science in secondary schools. http://pubs.sciepub.com/education/6/6/24/education-6-6-24.pdf integrated teaching natural science capacity problem-solving capacity secondary school