Background: There have been increasing calls for integrating computational thinking and computing into school science, mathematics, and engineering classrooms. The learning goals of the curriculum in this study included learning about both computational thinking and climate science. Including computer science in science classrooms also means a shift in the focus on design and creation of artifacts and attendant practices. One such design practice, widespread in the design and arts fields, is critique. This paper explores the role of critique in two urban, heterogenous 8th grade science classrooms in which students engaged in creating computer games on the topic of climate systems and climate change. It explores and compares how practices of critique resulted from curricular decisions to (i) scaffold intentional critique sessions for student game designers and (ii) allow for spontaneous feedback as students interacted with each other and their games during the process of game creation. Results: Although we designed formal opportunities for critique, the participatory dimension of the project meant that students were free to critique each other's games at any time during the building process and did so voluntarily. Data indicate that students focused much more on the game play dimension of the design than the science, particularly in those critique sessions that were student-initiated. Despite the de-emphasis on science in spontaneous critiques, students still focused on several dimensions of computational thinking, considering user experience, troubleshooting, modeling, and elegance of solutions. Conclusions: Students making games about science topics should have opportunities for both formal and spontaneous critiques. Spontaneous critiques allow for students to be authorities of knowledge and to determine what is acceptable and what is not. However, formal, teacher-designed critiques may be necessary for students to focus on science as part of the critique. Furthermore, one of the benefits to critiquing others was that students were able to see what others had done, how they had set up their games, the content they included, and how they had programmed certain features. Lastly, critiques can help facilitate iteration as students work to improve their games.
Abstract-With greater online access and greater use of computers and tablets, educational materials are increasingly available digitally, and are soon predicted to become the standard for science classrooms. However, researchers have found that institutionalized structures and cultural factors in schools affect teacher uptake and integration of technology. Findings are sparse that detail the complexities of how teachers actually incorporate technology in their teaching as they negotiate the introduction of a new and potentially disruptive innovation. With respect to a digital curriculum in particular, teachers can be unclear about their role vis-avis the curriculum, as the "computer" potentially becomes an alternative source of authority in the classroom, and this can mean that the teacher is no longer in control. This paper reports on the implementation of two units of an innovative environmental science program, Biocomplexity and the Habitable Planet, as a digital curriculum. We discuss some of the lessons learned about the mix of challenges, anticipated and unanticipated, that confronted four high school teachers as they implemented the curriculum in their classrooms. We suggest that developers and users of digital curricula pay particular attention to how they envision where the authority for teaching and learning in the classroom should reside.
We analyzed the practitioner literature on lab-based instruction in biology in The American Biology Teacher between 2007 and 2012. We investigated what laboratory learning looks like in biology classrooms, what topics are addressed, what instructional methods and activities are described, and what is being learned about student outcomes. The practitioner literature reveals a focus on novel and innovative labs, and gaps in some biology topics. There is little description of student learning, but motivation and engagement are a primary concern of authors. There is little evidence of students addressing the nature of science in laboratories, and too few opportunities for authentic exploration of phenomena. We suggest that biology instruction can be strengthened by more rigorous practitioner research through increased professional collaboration between teachers and education researchers, increased focus on the synergy between content and teaching practice, and more rigor in reporting student outcomes.
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