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Earlier integrated science, technology, engineering, and mathematics (STEM) education research has shown effects on students' attitudes toward STEM careers, actual and perceived learning, and interest in pursuing a STEM career in their future endeavors. The current systematic review purported to review the recent K-12 integrated STEM education research to determine (a) the factors that influence student outcomes and (b) the general characteristics of reviewed studies. Overall, the results (a) showed that most studies focused on integrating at least three subject areas; (b) highlighted four main factors (i.e., instructional, teacher-related, student-related, and extracurricular factors) that jointly influence student outcomes; and (c) revealed that science is the most frequently integrated main field followed by engineering. Engineering also turned out to be a connector in integrated STEM together with technology. The results led to various implications for both in-class practice and future research on K-12 integrated STEM education.

This multiple case study explores how instructors conceptualize and employ scaffolding in online courses. Participants included full time faculty (n = 4) who have designed and taught at least one online course within the past 12 months. Data sources included pre-interview surveys, semi-structured interviews, and online course observations. Data were analyzed by employing a general analytical strategy for developing a case description (Yin, 2018). The results showed that (a) instructors define scaffolding as a support to help students achieve course outcomes and (b) instructors implement different types of scaffolding (i.e., conceptual, metacognitive, procedural, strategic, and motivational) in hard and soft scaffolding forms. The results also showed that instructors' conceptualization and implementation of scaffolding differed based on their discipline and teaching philosophy, and the unique features of online courses. Implications for practice and research are discussed.