Learning area integrated teaching, teaching unit topics and the contents of various subjects with team teaching and cooperative learning to have students learn better integrated concepts, is emphasized domestically. Nevertheless, it is discovered that subject-specific teaching is still used in living technology teaching area. The integration and application of knowledge content learned in classes could enhance the problem solving opportunity. To effectively achieve research objectives and test research hypotheses, nonequivalent test experimental design is applied to the experimental research in this study. Aiming at 312 business school students of Parahyangan Catholic University (UNPAR), Indonesia, as the experimental objects, the research results are summarized as below. 1. STEM curriculum integration model presents significant effects on learning effect. 2. STEM curriculum integration model shows remarkable effects on learning gain. 3. Living technology teaching reveals notable effects on learning effect. 4. Living technology teaching appears significant effects on learning gain. 5. STEM curriculum integration model integrated living technology teaching presents remarkable effects on learning effect. 6. STEM curriculum integration model integrated living technology teaching shows notable effects on the promotion of learning gain. According to the results to propose suggestions, it is expected to have students analyze problems from more aspects and develop diverse solving strategies to effectively enhance living technology learning effectiveness.