Abstract
The paper reports about a study that examines changes in teachers’ incorporation of epistemic practices in their design of engineering lessons and compares them to their views about the nature of engineering knowledge across 100 hours of professional development. Nineteen K-8 teachers in the USA, who were new to teaching engineering as part of a shift in science learning standards, participated. We focused on four areas of engineering practice and epistemology, namely the orientation of engineering toward solutions, the role of context in defining engineering design specifications, the role and nature of data and evidence, and the interdisciplinary nature of science and engineering. Comparisons of changes in teachers’ incorporation of epistemic practices show some reflection of changes in their views about the nature of engineering knowledge. Comparisons suggest that they were able to design instruction with appropriate epistemic practices while not necessarily understanding related features of the nature of engineering.
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Appendices
Appendix 1
VNOEK Questionnaire Items.
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1)
A small community has a water filtration system that was designed 50 years ago. A group of individuals volunteer to propose a new design for the system. Identify the types of information the volunteers will need in order to propose a new design.
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2)
Describe the types of activities they might complete in order to propose a new design.
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3)
Do you think that their work and ideas will be different than the original designers, 50 years ago? Why or why not?
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4)
Explain whether you consider their work engineering and why.
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5)
Two different groups of engineers are working at two different companies: Eager Engineers Inc., and Acme Engineering. One group, Eager Engineers Inc., is working on a project to design a type of material similar to concrete that will be able to harden under water. The goal of the project is to create a material that will start out as a thick liquid but that will be able to harden in order to anchor bridges and stabilize pipes. Do you consider this engineering? Why or why not?
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6)
The other group, Acme Engineering, is working on a project to design a way to pour the concrete-type material into the location where it is needed under water. Do you consider this engineering? Why or why not?
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7)
Do you think that the design process for the Acme Engineering project and the Eager Engineers project will be identical? Explain your answer and provide an example if you can.
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8)
Eager Engineers and Acme Engineers are working together to design a new bridge structure that will connect two roads on either side of a lake. There are 2 engineers from each company working on the bridge design; 4 engineers total. Do you think they will have identical ideas for the project? Please explain your answer.
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9)
Do you think that the community and society where the bridge will be built will affect their design? If yes, how? If not, why not? Do you think the community will affect the design of the concrete-type material that will hold the bridge in place? Why or why not?
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10)
Do you think that the community and society where the bridge will be built will be affected by the design? If yes, how? If not, why not? Do you think the community will be affected by the design of the concrete-type material that will hold the bridge in place? Why or why not?
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11)
If the engineers have more than one idea, how will they decide which idea to use? Explain your answer.
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12)
What is an engineering model? What is the purpose of an engineering model? What information is used in order to create an engineering model?
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13)
How do science and technology relate to engineering? Provide an example to explain your answer.
Appendix 2. Engineering Reflection Prompts
Define engineering. Provide an example to explain your definition if you can.
Students have observed that the community garden space next to their school floods each time it rains and that the plants in the garden appear less healthy than those in a nearby garden in a different location that does not flood. They collect information about the layout and location of the garden as well as the plants that grow there. They create a proposal for their principal about how the garden should be changed in order to improve the health of the plants given the resources that the school has available. Do you consider this more science or more engineering experience? Why?
Students have observed that the lunch line flows so slowly that some students do not have enough time to eat all of their lunch. They collect information about time and the number of students who move through the line each day and make observations about the line locations where students stand the longest. They create a proposal for their principal about how the lunch line should be changed in order to improve the flow rate of the line which takes into account the number of students in the lunch room at one time, the amount of time that is available, and the layout of the serving stations. Do you consider this more science or more engineering? Why?
Two engineers are working at different institutions on projects to develop a new type of prosthetic hand. The goal of the project is to create a prosthetic that has articulated joints, that can be easily controlled by the patient, and that is made with cost-effective materials so that it is affordable. To what extent do you think they will develop identical designs? Explain why.
How are engineering, society, and culture related to one another?
What is a model in engineering? How do engineers develop models and what purpose do they serve? How do engineers decide if a design is a good one?
How is engineering design different than scientific inquiry and mathematical problem solving?
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Antink-Meyer, A., Arias, A.M. Teachers’ Incorporation of Epistemic Practices in K-8 Engineering and Their Views About the Nature of Engineering Knowledge. Sci & Educ 31, 357–382 (2022). https://doi.org/10.1007/s11191-021-00265-4
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DOI: https://doi.org/10.1007/s11191-021-00265-4