June 14, 2015
June 14, 2015
June 17, 2015
K-12 & Pre-College Engineering
26.556.1 - 26.556.2
DNA Extraction Using Engineering Design: A STEM Integrated Unit (Curriculum Exchange)The Engineering to Transform the Education of Analysis, Measurement, & Science(EngrTEAMS) project is an engineering, design-based approach to teacher professionaldevelopment that has 50 teachers per year designing curricular units for science topic areasrelated to the Next Generation Science Standards. The project includes summer professionaldevelopment and curriculum writing workshops, paired with coaching, to allow teams ofteachers to design engineering curricular units focused on science concepts, meaningful dataanalysis, and measurement. Each unit goes through an extensive design research cycle to ensureits quality and is published in an online format.This seven day unit is designed for 7th – 9th grade students. The instructional material combinesthe learning from cellular biology, biochemistry, biotechnology, and engineering design througha series of STEM integrated activities that allow students to use various aspects of engineering tosolve a problem.The initial lesson introduces students to the engineering process and the engineering designchallenge. The challenge involves making improvements to the biotechnological process forextracting DNA. Students then use a 3-dementional cellular model to help conceptualize,understand, and define the problem. This lesson reveals preconceptions and misconceptionsabout engineering, biotechnology, and cellular structure and functions. Next, students investigatethe client’s process for extracting DNA from cells and begin to identify possible areas forimprovement. Following this lesson, students engage in several hands-on activities that examinecellular processes and factors that influence those processes with special attention given to ratesof enzymatic reactions and surface to volume relationships. These activities are designed to helpstudents understand the complexities of how biological systems function and identify ways inwhich they can be manipulated. In the final lesson of the unit, students apply what they havelearned through multiple iterations of the engineering design process to optimize the DNAextraction process.
Mathis, C. A., & Moore, T. J., & Guzey, S. S. (2015, June), DNA Extraction Using Engineering Design: A STEM Integration Unit (Curriculum Exchange) Paper presented at 2015 ASEE Annual Conference & Exposition, Seattle, Washington. 10.18260/p.23894
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