Conference Session

Student Success & Development - Focus on Mentoring

Collection

2017 FYEE Conference

Authors

Mona Hemmati, Colorado State University; Alistair Cook, Colorado State University; Thomas J. Siller, Colorado State University

Tagged Topics

Diversity, FYEE Division - Paper Submission

to provide an opportunity for them to learn about theengineering, using the assistance of one of these fellows, the engineering profession and develop some necessary skills forcurriculum of the course entitled “Engineering Graphics and professional life, such as, communication, responsibility,Computing” has changed. This class includes 186 students, 3 teamwork, and decision-making [7]. This project isteachers, 5 teacher assistances, and 1 Graduate Teaching coordinated by the Engineering Without BordersFellow (GTF). The class is held in two sessions per week. organization in Australia, founded at 2007, and operates inAlso, required to register for one of six available laboratory partnership with non-government

Conference Session

NSF Grantees Poster Session

Collection

2018 ASEE Annual Conference & Exposition

Authors

Aliye Karabulut Ilgu, Iowa State University; Elizabeth Miller; Suhan Yao, Iowa State University; David A Wehr, Iowa State University; An Chen, Iowa State University; Yelda Turkan, Oregon State University; Amir H. Behzadan, Texas A&M University; Charles T. Jahren P.E., Iowa State University

Tagged Topics

NSF Grantees Poster Session

State University Charles T. Jahren is the W. A. Klinger Teaching Professor and the Assistant Chair for Construction Engi- neering in the Department of Civil, Construction and Environmental Engineering at Iowa State University. He earned his Bachelor of Science in Civil Engineering and his Master of Business Administration from the University of Minnesota and his PhD in Civil Engineering from Purdue University. He has over six years of industrial experience as a bridge construction project engineer for a construction contractor and as a research engineer for the Naval Civil Engineering Laboratory in Port Hueneme California. His teaching interests include construction equipment, cost estimating and construction process

Conference Session

NSF Grantees Poster Session

Collection

2007 Annual Conference & Exposition

Authors

Venkata Seshada Aluri, University of Arkansas; Javed Alam, Youngstown State University; Joseph Rencis, University of Arkansas

AC 2007-1707: MULTIMEDIA AIDED PROTOTYPE E-LEARNING (MAPEL)MODULES FOR TEACHING THE FUNDAMENTALS OF THE FINITE ELEMENTMETHODVenkata Seshada Aluri, University of Arkansas Venkata Aluri is currently working on his M.S. in the Department of Mechanical Engineering at the University of Arkansas. He received his B.S. in Mechanical Engineering from Osmania University in Hyderabad, India in 2004.Javed Alam, Youngstown State University Javed Alam is a professor of Civil and Environmental Engineering at Youngstown State University. He obtained his M.S. degree from Asian Institute of Technology and a Ph.D. degree from Case Western Reserve University. His research interests are in the area of Structural

Conference Session

Mechanical Engineering Poster Session

Collection

2008 Annual Conference & Exposition

Authors

Brian Novoselich, United States Military Academy; Bobby Crawford, United States Military Academy; Erica Young, United States Military Academy

Tagged Divisions

Mechanical Engineering

is a licensed Professional Engineer.Erica Young, United States Military Academy Erica Slate Young is an Assistant Professor in the Department of Mathematical Sciences at the United States Military Academy at West Point. She earned her Bachelor of Science degree in Mathematics and her Master of Arts in Mathematics Education both from Appalachian State University and her doctoral degree in Mathematics Education from the University of Texas at Austin. Page 13.874.1© American Society for Engineering Education, 2008 ME350 Remote Education: Experiences Teaching Engineering to

Conference Session

Engineering Ethics IV

Collection

2008 Annual Conference & Exposition

Authors

B. Kyun Lee, LeTourneau University; Paul Leiffer; R. William Graff, LeTourneau University

Tagged Divisions

Engineering Ethics

LeTourneau University, where he taught since 1975. He received his B.S., M.S., and PH.D. from Purdue University in electrical engineering. Prior to joining LeTourneau University, he was assistant professor of electrical engineering at Drexel University for six years, and at Wilkes College for two years. His professional interests include antennas, microwaves, plasma, and ethics. Email: billgraff@letu.edu Page 13.1013.1© American Society for Engineering Education, 2008 Psychological Considerations in Engineering Teaching: An Ethical Mandate to Produce Responsible

Collection

2008 GSW

Authors

Carol Costello; August Allo

Session 5-2 Simulating the Engineering Workplace: An Innovative Teaching Methodology in a Senior Electrical Engineering Class Carol Costello, August Allo Department of Electrical and Computer Engineering University of Texas at San Antonio AbstractConcerns regarding the ability of the U. S. to produce competitive scientists andengineers have stimulated a major reconsideration of curricula in many universities. Thispaper documents the results of an innovative engineering professionalism programintegrated into the first semester of a two-semester

Conference Session

Integrating Math, Science, and Engineering

Collection

2009 Annual Conference & Exposition

Authors

Hassan Moore, University of Alabama, Birmingham; Gregg Janowski, University of Alabama, Birmingham; Melinda Lalor, University of Alabama, Birmingham

Tagged Divisions

Mathematics

shifts of focus –from core mathematics toward applications and toward interdisciplinary work with the naturaland social sciences, from academic to industrial and laboratory settings, from individual self-directed work to collaborative and multidisciplinary effort, from technical communication withco-specialists to translational communication across disciplinary and cultural boundaries.” Many faculty members within the School of Engineering at the university were concerned withthe severe lack of critical understanding of rudimentary concepts in calculus and differentialequations. Students’ basic mechanics were generally strong since students were verycomfortable with equations once they took on the recognizable form shown in their earliercourses

Conference Session

Focus on Faculty

Collection

2009 Annual Conference & Exposition

Authors

Charlie Law, Pennsylvania State University, Schuykill; David Younger, Rice University; Ann Saterbak, Rice University

Tagged Divisions

Women in Engineering

Bioengineering Department at Rice University. She received her B.A. in Chemical Engineering and Biochemistry from Rice University in 1990 and her Ph.D. in Chemical Engineering from the University of Illinois in Urbana-Champaign in 1995. In 2007, she won the ASEE Robert G. Quinn Award for Excellence in Laboratory Instruction. Page 14.819.1© American Society for Engineering Education, 2009 Investigation of the Underrepresentation of Women in the G. R. Brown Teaching Awards at Rice UniversityAbstractDuring 2000-2007, only three of the 28 unique winners (11%) of the G. R. Brown Award forTeaching

Conference Session

Instructional Strategies in AEC Education

Collection

2009 Annual Conference & Exposition

Authors

Ahmed Megri, University of Wyoming

Tagged Divisions

Architectural

AC 2009-2488: TEACHING THE INTEGRATION OF SAFETY ANDFIRE-PROTECTION ELEMENTS INTO THE BUILDING DESIGN PROCESSAhmed Megri, University of Wyoming Page 14.1157.1© American Society for Engineering Education, 2009 Teaching the integration of safety and fire protection elements into the building design processAbstractSummarized within the following article are the attempts made over an eight-year time period atthe Illinois Institute of Technology to improve the skills of its Architecture and ArchitecturalEngineering Students with regards to the integration of safety and fire protection into thebuilding design process.System integration has long been

Conference Session

Efficient Authenticity: Modeling, Labs, Real-World Applications in Aerospace

Collection

2017 ASEE Annual Conference & Exposition

Authors

Muhammad Omar Memon, University of Dayton; Dathan Erdahl Ph.D., University of Dayton Research Institute; Saad Riffat Qureshi, University of Dayton

Tagged Topics

Diversity

Tagged Divisions

Aerospace

Paper ID #19655Empowering Students to Teach Flight Dynamics and Flight Simulation En-hanced Learning through Applied ModelingMr. Muhammad Omar Memon, University of Dayton Muhammad Omar Memon is a doctorate student and a part time instructor for Flight Vehicle Performance at the University of Dayton.Dathan Erdahl Ph.D., University of Dayton Research Institute Dathan Erdahl is a research engineer with the University of Dayton Research Institute and has been an adjunct faculty member with the School of Engineering since 2008. He received his M.S. (2000) and Ph.D. (2005) degrees from the Georgia Institute of Technology and has

Conference Session

Programs and Pedagogies

Collection

2018 ASEE Annual Conference & Exposition

Authors

Sandra L. Furterer, University of Dayton

Tagged Divisions

Engineering Management

. Management of Engineering Systems course material, Engineering Management,Systems and Technology department, School of Engineering, University of Dayton, 2017a.Gentile, J. R., Teaching methods. Salem Press Encyclopedia of Health, January, 2016Hunt, L. et al., “Assessing practical laboratory skills in undergraduate molecular biologycourses,” Assess. Eval. Higher Educ., vol. 37, no. 7, pp. 861–874, 2012.Miller, J., “Case study in second language teaching,” Queensland J. Educ. Res., vol. 13, pp. 33-53, 1997.Popil, I., “Promotion of critical thinking by using case studies as teaching method, “ NurseEducation Today, vol. 31, pp. 204-207, 2011.Swart, A.J., “Does it matter which comes first in a curriculum for engineering students—Theoryor practice?,” Int

Conference Session

The Evolving Classroom

Collection

2018 ASEE Annual Conference & Exposition

Authors

Joel Lanning P.E., University of California, Irvine

Tagged Topics

Diversity

Tagged Divisions

Civil Engineering

Steel Construction, Chicago, IL.[9] Civjan, S. (2010) "Core Teaching Aids for Structural Steel Design Courses" American Institute of Steel Construction. Retrieved from https://www.aisc.org/education/university- programs/ta-core-teaching-aids-for-structural-steel-design-courses/[10] Hale, M., Freyne, S., Durham, S. (2007) “Student Feedback And Lessons Learned From Adding Laboratory Experiences To The Reinforced Concrete Design Course” Proc. ASEE Annual Conf. & Expo., Honolulu.[11] Behrouzi, A. (2016) “Physical Artifacts in Introductory-level Reinforced Concrete Design Instruction” Proc. ASEE Annual Conf. & Expo., New Orleans.[12] Robinson, I. (2002) “Survey of Education and License Requirements for Structural

Conference Session

NSF Grantees Poster Session

Collection

2019 ASEE Annual Conference & Exposition

Authors

Alessio Gaspar, University of South Florida; A.T.M. Golam Bari, University of South Florida, Tampa; Dmytro Vitel; Kok Cheng Tan, University of South Florida; Jennifer Albert, The Citadel; Rudolf Paul Wiegand III, University of Central Florida

Tagged Topics

NSF Grantees Poster Session

Paper ID #26832Board 59: Coevolutionary-Aided Teaching: Leveraging the Links BetweenCoevolutionary and Educational DynamicsDr. Alessio Gaspar, University of South Florida Dr. Alessio Gaspar is an Associate Professor with the University of South Florida’s Department of Com- puter Science & Engineering and director of the USF Computing Education Research & Evolutionary Algorithm Laboratory. He received his Ph.D. in computer science in 2000 from the University of Nice Sophia-Antipolis (France). Before joining USF, he worked as visiting professor at the ESSI polytechnic and EIVL engineering schools (France) then as

Conference Session

K-12 & Pre-College Engineering Division Poster Session: Works in Progress

Collection

2016 ASEE Annual Conference & Exposition

Authors

Adam T. Melvin, Louisiana State University

Tagged Divisions

Pre-College Engineering Education Division

Paper ID #16763A Hands-On Approach to Teaching K-12 Students About Microfluidic De-vices (Work in Progress)Prof. Adam T. Melvin, Louisiana State University Adam Melvin obtained a BS in Chemical Engineering and a BA in Chemistry from the University of Arizona, a MS in Chemical Engineering (with a minor in Biotechnology) and a Ph.D. in Chemical En- gineering from North Carolina State University under the direction of Jason Haugh. He was an NIH postdoctoral fellow at the University of North Carolina at Chapel Hill in the Departments of Chemistry and Biomedical Engineering under the direction of Nancy Allbritton. In August of

Conference Session

Innovative Project-based Learning Practices in Manufacturing

Collection

2015 ASEE Annual Conference & Exposition

Authors

Dawn Wendell, Massachusetts Institute of Technology; Charles Zheng Guan, MIT-SUTD Collaboration, Massachusetts Institute of Technology

Tagged Topics

Diversity

Tagged Divisions

Manufacturing

  electrical engineering  teaching  lab  with  equipment  such  as  power  supplies,  soldering  stations, oscilloscopes,  and  other  diagnostic  equipment,  which  became  essential  in  the  latter   steps   of  the project.  The  shop  spaces  are  shown  in  Figure  4.  Other  tools  the students were allowed indirect access  to  included  CNC  machining  equipment,  located  in  a  different  machine  shop  in  the  same building, and an abrasive waterjet cutter.          Figure 4: The MIT International Design Center rapid prototyping laboratory (left) and

Conference Session

Innovative Use of Technology I

Collection

2015 ASEE Annual Conference & Exposition

Authors

Katharina Schuster, RWTH Aachen University; Anja Richert, RWTH Aachen University; Sabina Jeschke, RWTH Aachen University

Tagged Divisions

Computers in Education

Paper ID #13135New Perspectives for Engineering Education – About the Potential of MixedReality for Learning and Teaching ProcessesDr. Katharina Schuster, RWTH Aachen University Katharina Schuster has been working as a scientific researcher at IMA/ZLW & IfU (IMA - Institute of Information Management in Mechanical Engineering, ZLW - Center for Learning and Knowledge Management & IfU - Assoc. Institute for Management Cybernetics e.V.) of RWTH Aachen University since 2009. She has completed her Master’s Degree in Communication Sciences, Psychology and Political Sciences at RWTH Aachen University and has spent

Conference Session

Emerging Computing and Information Technologies II

Collection

2016 ASEE Annual Conference & Exposition

Authors

Mahmoud K. Quweider, University of Texas - Rio Grande Valley; Fitratullah Khan, University of Texas - Rio Grande Valley

Tagged Topics

Diversity

Tagged Divisions

Computing & Information Technology

Paper ID #16065Implementing a Challenge-Based Approach to Teaching Selected Courses inCS and Computational SciencesDr. Mahmoud K. Quweider, University of Texas - Rio Grande Valley M K Quweider is a Professor of Computer & Information Sciences at the U. of Texas at UTRGV. He re- ceived his Ph.D. in Engineering Science (Multimedia and Imaging Specialty) and B.S. In Electrical Engi- neering, M.S. in Applied Mathematics, M.S. in Engineering Science, and M.S. in Biomedical Engineering all from the University of Toledo, Ohio. He also holds a Bachelor of English and a Masters of Business Administration from the University of

Conference Session

Design Thinking and Creativity

Collection

2018 ASEE Annual Conference & Exposition

Authors

Kevin Calabro, University of Maryland, College Park

Tagged Topics

Diversity

Tagged Divisions

Educational Research and Methods

 of improving students’ development along one or more of the patterns.  Additionally, we believe CSR is a particularly appropriate method for this study because the method permits teaching practices to be studied in the context of a real classroom.  The classroom setting within our case study contrasts the laboratory setting used by a large number of studies that have informed the development of the matrix (e.g., [6]­[9]).  The controlled conditions of these research studies do not accurately reflect engineering practice which often requires engineers to work on teams over long durations to solve complex problems. Additionally, the clinical setting does not reflect an educational setting in which a teacher is available to help guide and

Conference Session

Flight and Control Simulators for Virtual Learning

Collection

2020 ASEE Virtual Annual Conference Content Access

Authors

A. Ram Kim, Iowa State University; Benjamin Ahn, Iowa State University of Science and Technology; Matthew Erik Nelson, Iowa State University

Tagged Topics

Diversity

Tagged Divisions

Aerospace

Paper ID #30037Implementation of an inductive learning and teaching framework for anAircraft Flight Dynamics and Control classDr. A Ram Kim, Iowa State University A Ram Kim is an assistant professor at Iowa State Univeristy. She obtained B.S. and Ph. D of Aerospace Engineering in 2013 and 2018 at the University of Kansas. She had worked as a teaching assistant for Flight Dynamics and Control class over 3 years in KU. She has taught Flight Dynamics and Automatic control class at ISU for 2 year in 2019.Dr. Benjamin Ahn, Iowa State University of Science and Technology Dr. Benjamin Ahn is an Assistant Professor at Iowa State

Conference Session

ChE: Poster Session

Collection

2007 Annual Conference & Exposition

Authors

William Krantz, National University of Singapore

Tagged Divisions

Chemical Engineering

speciesin a macroscale model. Scaling permits identifying the various reaction regimes and domains thatcan occur on both the micro- and macroscale.2e. Process ModelingScaling analysis is used in teaching a course in process modeling to facilitate the following: toassess what approximations can be made in developing a tractable model for the process; todetermine the appropriate values of the process parameters in designing either numerical,laboratory, or pilot-scale testing of a process; and in determining the optimal minimumparametric representation of the describing equations for the process in order to correlatenumerical or experimental data.3. The Scaling Analysis TechniqueThe ○(1) scaling analysis technique of interest here has been described

Conference Session

ChE: Innovations in undergraduate and graduate programs

Collection

2007 Annual Conference & Exposition

Authors

Lale Yurttas, Texas A&M University; Zachry Kraus, Texas A&M University; Jeffrey Froyd, Texas A&M University; Jean Layne, Texas A&M University; Mahmoud El-Halwagi, Texas A&M University; Charles Glover, Texas A&M University

Tagged Divisions

Chemical Engineering

AC 2007-257: A WEB-BASED COMPLEMENT TO TEACHING CONSERVATIONOF MASS IN A CHEMICAL ENGINEERING CURRICULUMLale Yurttas, Texas A&M University Lale Yurttas is a Senior Lecturer and Assistant Department Head in Chemical Engineering Department at Texas A&M University. She chairs Departmental ABET Committee. She also participates in Engineers Without Borders-USA, especially in TAMU Chapter and coordinates service learning activities for the current NSF project. She has 10 years of experience in engineering education and curriculum development.Zachry Kraus, Texas A&M University Zachary Kraus is a Ph.D. student at Texas A&M University in the Department of Chemical Engineering

Conference Session

Materials Science Education for the Future

Collection

2013 ASEE Annual Conference & Exposition

Authors

Eunice Yang, University of Pittsburgh, Johnstown

Tagged Divisions

Materials

Paper ID #7413A Hybrid Approach to Teaching Materials Science Using POGIL and ActiveLearning ActivitiesDr. Eunice Yang, University of Pittsburgh, Johnstown Dr. Eunice Yang received her doctorate in mechanical engineering from the Pennsylvania State University in 2006. She is currently an assistant professor at the University of Pittsburgh Johnstown campus. She has taught courses in Mechanical Measurements, Mechanical Measurements Lab, Materials Science, Stat- ics, Dynamics, Matlab, Fluid Dynamics, Strength of Materials Lab, Engineering Design, and Autodesk Inventor. Her current research interest lies in the area of

Conference Session

Web Education: Delivery and Evaluation

Collection

2003 Annual Conference

Authors

Robert Blake; kathleen marrs; Jeff Watt; Andrew Gavrin

Session 3220 Just-in-Time Teaching (JiTT): Using the Web to Enhance Classroom Learning A. Gavrin, Jeffrey X. Watt, Kathleen Marrs, Robert E. Blake, Jr. Indiana University Purdue University Indianapolis/Texas Tech UniversityAbstractJust-in-Time Teaching (JiTT) is a pedagogical system that uses the WWW to enhance learning inthe classroom setting. JiTT was developed for use in the introductory physics classes taken byengineering majors at IUPUI and the US Air Force Academy, but its use has spread to a widerange of fields and institutions. At IUPUI, JiTT is now used in physics, biology

Conference Session

Understanding Students: Cognition

Collection

2003 Annual Conference

Authors

Matthew Eliot; Angela Linse; Jennifer Turns

Session 1330 Exploring the Teaching Challenges of Engineering Faculty: What do they really want to know? Jennifer Turns, Matt Eliot, Angela Linse University of WashingtonAbstract: The engineering education community currently focuses a great deal of attention onhelping engineering educators adopt effective teaching practices. While strategies in current usehave had an impact on engineering teaching and learning, the persistence of engineering courses inwhich lecture is the primary teaching method indicates that there is room for improvement. Wesuggest that

Conference Session

Innovative Techniques

Collection

2005 Annual Conference

Authors

Sofia A. Pechorskaya; Alexandr M. Shvaiger; Charles Dolan

the Associate Professor position inRussian University is about $ 100 per month).As demonstrated in [3], engineering courses are very difficult to teach on-line because of theneed for laboratories and equation manipulation, especially at the undergraduate level. But Page 10.953.2simultaneously, “many of the issues can be solved through collaboration among institutions tocreate a strong national shared engineering curriculum enabled by on-line methods… It may play 2005-1175_Final.doca remarkable role in brining together the work of colleges and universities across the UnitedStates (and eventually across the

Conference Session

Emerging Trends in Engineering Education

Collection

2004 Annual Conference

Authors

Marjan Zadnik

Teaching in Engineering, Science and Computing: A Collaborative Process to Improve Quality Marjan G. Zadnik, Joan Gribble, Shelley R. Yeo†, Peter L. Lee. Division of Engineering, Science and Computing, † Learning Support Network, Curtin University of Technology, PO Box U1987, Perth, Western Australia, 6845.IntroductionThis paper outlines a process encouraging the involvement of all academic staff in theDivision of Engineering, Science and Computing at Curtin University of Technology toimprove the quality of their teaching and students’ learning. The Teaching

Conference Session

Graduate Student Experiences

Collection

2004 Annual Conference

Authors

Michael Watts; Theodor Richardson

South Carolinaand is a 2-year participant in the NSF GK-12 Fellowship Program.JED LYONS is an Associate Professor of Mechanical Engineering at the University of South Carolina and theDirector of the South Carolina Center for Engineering and Computing Education. He teaches laboratory, design,and materials science to undergraduates, graduate students and K-12 teachers. He researches engineering education,plastics and composites. Jed is the GK-12 PI. All correspondence should be addressed to Jed S. Lyons, University ofSouth Carolina, Columbia, SC, 29208. lyons@sc.edu.CHRISTINE EBERT a Professor of Education and the Associate Dean of the Graduate School and Co-PI on theGK-12 grant Dr. Ebert is instrumental in teaching engineering students how to

Conference Session

ASEE Multimedia Session

Collection

2003 Annual Conference

Authors

Ashraf Ghaly

Session 2793 Using computer simulation to teach technical aspects of construction in a liberal arts setting Ashraf M. Ghaly Associate Professor, Civil Engineering Department Union College, Schenectady, NY 12308AbstractThe general education curriculum at Liberal Arts colleges requires students to take courses inhistory, literature, civilization, social sciences, sciences, and cultural diversity. These coursescomprise almost a third of the entire curriculum. All students, including engineering students, arerequired to take these

Conference Session

NSF Grantees Poster Session

Collection

2024 ASEE Annual Conference & Exposition

Authors

Maryam Darbeheshti, University of Colorado Denver; Tom Altman; Katherine Goodman, University of Colorado Denver; Heather Lynn Johnson; Marie E. Evans, University of Colorado Denver; David C. Mays, University of Colorado Denver

Tagged Topics

Diversity, NSF Grantees Poster Session

stakeholders, assisting with data collection, and data analysis procedures. She obtained her Bachelor’s degree in Cross-cultural Studies from Palm Beach Atlantic University.Prof. David C. Mays, University of Colorado Denver David Mays is an Associate Professor in the Department of Civil Engineering at the University of Colorado Denver. He earned his B.S. from the University of Pennsylvania in 1995, then taught high school through Teach for America and worked as a contractor at Los Alamos National Laboratory before earning his M.S. and Ph.D. from the University of California Berkeley in 1999 and 2005, respectively. He has been at CU Denver since 2005, where he applies ideas from complex systems science to study flow in

Conference Session

Empowering Students and Strengthening Community Relationships

Collection

2024 ASEE Annual Conference & Exposition

Authors

Danielle N. Wagner, Purdue University; Sukrati Gautam, Purdue University; Peyman Yousefi, Merck Group; Nuela Chidubem Enebechi, Purdue University; Andrew Pierce, Purdue University; William C. Oakes, Purdue University

Tagged Divisions

Community Engagement Division (COMMENG)

and previous teaching experience to self-efficacy among graduate teaching assistants. Res High Educ. 1994;35(4):481-497. doi:10.1007/BF0249638416. Chiu PHP, Corrigan P, Hui SKF. A study of graduate teaching assistants’ self-efficacy in teaching: Fits and starts in the first triennium of teaching. Cogent Education. 2019;6(1). doi:10.1080/2331186X.2019.157996417. Wheeler LB, Chiu JL, Maeng JL, Bell RL. An exploratory study of teaching assistants’ motivation for inquiry-based teaching in an undergraduate laboratory context. Chemistry Education Research and Practice. 2019;20(1):53-67. doi:10.1039/c8rp00157j18. Nasser-Abu Alhija F, Fresko B. Graduate teaching assistants: motives, difficulties and