Inquiry teaching in science education has been widely advocated for decades. It is a critical learning objective in many science teacher preparation programs. Despite its importance, it is not effectively implemented in science classrooms. One of the reasons is the lack of reliable and valid instruments that provide practical definition, concrete guideline, and objective assessment for the practice of inquiry teaching. To fill this gap, we designed a 3E rubric based on the 5E learning model as one specific form of inquiry teaching to measure preservice teachers' practice at different phases of a science lesson. In this study, we thoroughly introduced the 3E rubric and its use. Through drawing on 76 elementary pre-service science teachers' teaching videos, we analyzed its reliability and validity with the tools of Intraclass Correlation Coefficient, Fleiss' kappa, and Pearson correlation. According to the results, the 3E rubric is a reliable and valid tool to assess pre-service teachers' practical knowledge of inquiry teaching. The contributions of this rubric to the teaching and research in science teacher preparation are discussed and future research directions are proposed.Inquiry teaching is also being abused due to its loose definition. Crawford (2014) discusses five myths about inquiry teaching:Myth 1: All science subject matter should be taught through inquiry.Myth 2: True inquiry occurs only when students generate and pursue their own questions. Myth 3: Inquiry teaching occurs easily through use of hands-on or kit-based instructional materials.Myth 4: Student engagement in hands-on activities guarantees that inquiry teaching and learning are occurring.Myth 5: Inquiry can be taught without attention to subject matter. (p. 516)Those myths correspond to the inaccurately over-simplified definition of inquiry teaching criticized by Kirschner et al. (2006), which are also common problems PSTs experience when they first implement inquiry teaching. Those myths suggest that inquiry teaching should be framed as one candidate approach to science teaching (Myth 1) epitomized by minds-on rather than hands-on activities (Myths 2 -4) in the attempt to deepen students' conceptual understanding (Myth 5). Together, the guidelines above direct our work of designing the 3E rubric to evaluate PSTs' practical knowledge of inquiry teaching.
The 3E Learning CycleIn this study, we derive a 3E rubric from the 5E model (Bybee et al., 2006). As outlined by Liu et al. (2009), this 5E model defines 5 phases of teaching:Engage: The teacher assesses students' prior knowledge and engages students in learning a new concept. The teacher also helps students make connections between prior and present knowledge and helps to organize students' thoughts about the learning outcomes of present activities.Explore: The teacher provides students with a common base of activities reflective of present concepts processes, and skills. Students complete activities by using prior knowledge to generate new ideas, to explore questions and possibilities, and ...