Nguyen Van Hoa and Tuong Duy Hai 2018. BUILDING SOME TYPES OF MECHANICAL TOOLS TO ORGANIZE STEM ACTIVITIES AND TEACHING GENERAL PHYSICS. UED Journal of Social Sciences, Humanities and Education. 8, 3B (Aug. 2018), 34-40. DOI:https://doi.org/10.47393/jshe.v8i3B.720.