A Size and Scale Framework for Guiding Curriculum Design and Assessment

Background The concepts of size and scale in nanotechnology are difficult for most beginning engineering students to grasp. Yet, guidance on the specific aspects of size and scale that should be taught and assessed is limited. Purpose This research sought to empirically develop a framework for size and scale conceptualization and provide a blueprint to guide curriculum development and assessment. Design/Methods Through an exploratory sequential mixed methods design, we qualitatively examined 30 teams of 119 first-year engineering students' nanotechnology-based projects to identify concepts beyond those in the literature to create a Size and Scale Framework (SSF). We then created a blueprint with associated learning objectives that can guide curriculum and assessment development. To demonstrate the utility of the SSF blueprint, an SSF-based quiz was developed and studied using classical test theory with 378 first-year engineering students. Results The findings categorized size and scale in terms of eight aspects: Definition, Qualitative Categorical, Qualitative Relational, Qualitative Proportional, Quantitative Absolute, Quantitative Categorical, Quantitative Relational, and Quantitative Proportional. The SSF can be applied as a blueprint for others to develop curriculum and assessment. The SSF-based quiz demonstrated acceptable properties for use with first-year engineering students. Conclusions Development of the SSF-based quiz is an example of how the SSF can be applied to create a classroom quiz to assess students' size and scale knowledge in the context of nanotechnology.

[1]  Wendy C. Crone,et al.  Nanotechnology and the public: Effectively communicating nanoscale science and engineering concepts , 2007 .

[2]  Kerrie A. Douglas,et al.  Validity: Meaning and Relevancy in Assessment for Engineering Education Research , 2015 .

[3]  Denise L Drane,et al.  Understanding Undergraduate Students' Conceptions of a Core Nanoscience Concept: Size and Scale , 2007 .

[4]  Thomas R. Tretter,et al.  Teachers’ Concepts of Spatial Scale: An international comparison , 2013 .

[5]  Kelsey Joy Rodgers,et al.  Development and validation of a Nano Size and Scale Instrument (NSSI) , 2014, 2014 IEEE Frontiers in Education Conference (FIE) Proceedings.

[6]  Robert P. H. Chang.  A call for nanoscience education , 2006 .

[7]  Steven J. Osterlind,et al.  Classical Test Theory , 2013 .

[8]  Ramana G. Reddy,et al.  Undergraduate Education in Nanotechnology and Nanoscience , 2012 .

[9]  M. G. Jones,et al.  Accuracy of Scale Conceptions in Science: Mental Maneuverings across Many Orders of Spatial Magnitude. , 2006 .

[10]  Shawn Y. Stevens,et al.  Secondary Students' Beliefs About Their Interests In Nanoscale Science And Engineering , 2007 .

[11]  C. Mirkin,et al.  Nanotechnology research directions for societal needs in 2020: summary of international study , 2011 .

[12]  Cesar Delgado,et al.  Development of a research -based learning progression for middle school through undergraduate students' conceptual understanding of size and scale , 2009 .

[13]  V. Albe,et al.  Nanosciences and nanotechnologies learning and teaching in secondary education: a review of literature , 2010 .

[14]  Sean Brophy,et al.  Scaffolding Student’s Conceptions Of Proportional Size And Scale Cognition With Analogies And Metaphors , 2008 .

[15]  Kellie Wills,et al.  Research Article Developing and Evaluating Instructionally Sensitive Assessments in Science , 2012 .

[16]  Denise L Drane,et al.  A Typology of Undergraduate Students' Conceptions of Size and Scale: Identifying and Characterizing Conceptual Variation. , 2011 .

[17]  Dennis McDougall.  College Faculty's Use of Objective Tests: State-of-the-Practice versus State-of-the-Art. , 1997 .

[18]  S. Messick.  Validity of Psychological Assessment: Validation of Inferences from Persons' Responses and Performances as Scientific Inquiry into Score Meaning. Research Report RR-94-45. , 1994 .

[19]  Evan S. Michelson,et al.  Americans' Nanotechnology Risk Perception: , 2008 .

[20]  Sean Brophy,et al.  An Integrated Knowledge Framework to Characterize and Scaffold Size and Scale Cognition (FS2C) , 2012 .

[21]  Pep Simo,et al.  Low-Cost educational videos' for engineering students: a new concept based on video streaming and Youtube channels , 2011 .

[22]  D. Weiss,et al.  Interrater reliability and agreement. , 2000 .

[23]  J. D. Yoreo.  Nanoscale Informal Science Education (NISE) Network Promotes Nanoscience Literacy , 2007 .

[24]  Thomas R. Tretter,et al.  Impact of introductory nanoscience course on college freshmen's conceptions of spatial scale. , 2010 .

[25]  M. G. Jones,et al.  Experienced and Novice Teachers’ Concepts of Spatial Scale , 2008 .

[26]  Kelsey Joy Rodgers,et al.  First-Year Engineering Students' Communication of Nanotechnology Size & Scale in a Design Challenge , 2014 .

[27]  M. Gail Jones,et al.  Developing a Sense of Scale: Looking Backward , 2008 .

[28]  Ronald M Cosby.  Strengthening Nanoscience Education through Multidisciplinary Collaborations , 2006 .

[29]  Tamara J. Moore,et al.  Developing Measures of Roughness: Problem Solving as a Method to Document Student Thinking in Engineering* , 2010 .

[30]  Mihail C. Roco,et al.  The long view of nanotechnology development: the National Nanotechnology Initiative at 10 years , 2011 .

[31]  Stephen J. Fonash.  Education and Training of the Nanotechnology Workforce , 2001 .

[32]  Thomas A. Litzinger,et al.  Learning Conceptual Knowledge in the Engineering Sciences: Overview and Future Research Directions , 2008 .

[33]  E. Ostrom,et al.  The concept of scale and the human dimensions of global change: a survey , 2000, Ecological Economics.

[34]  M. G. Jones,et al.  Conceptual Boundaries and Distances: Students' and Experts' Concepts of the Scale of Scientific Phenomena , 2006 .

[35]  Kelsey Joy Rodgers,et al.  First-Year Engineering Students Explore Nanotechnology in Engineering , 2013 .

[36]  Gerhard Klimeck,et al.  nanoHUB.org: Advancing Education and Research in Nanotechnology , 2008, Computing in Science & Engineering.