74. David E. Meltzer, Diagnostic Testing, invited presentation at the PhysTEC TIR [Teacher in Residence] and Teacher Gathering, Edmonton, Alberta, Canada, July 18, 2008.

73. David E. Meltzer, Investigating and Addressing Learning Difficulties in Thermodynamics, invited talk at the 2008 American Society for Engineering Education Annual Conference and Exposition, Pittsburgh, Pennsylvania, June 24, 2008.

72. David E. Meltzer, Research-Based Perspectives on Science and Mathematics Education, invited talk at the School of Educational Innovation and Teacher Preparation, Arizona State University, Mesa, Arizona, March 6, 2008.

71. David E. Meltzer, What is Teacher Effectiveness and How May It Be Assessed?, invited workshop at the 2008 PTEC [Physics Teacher Education Coalition] Conference on the Preparation of Physics and Physical Science Teachers, Austin, Texas, March 1, 2008.

70. David E. Meltzer, Defining “Conceptual Understanding” Through Appropriate Constraints on a Knowledge Domain, invited talk at the 2007 Summer Meeting of the American Association of Physics Teachers, Greensboro, North Carolina, July 31, 2007.

69. David E. Meltzer, A Research-Based Approach to the Learning and Teaching of Physics, seminar at Indiana University-Purdue University Indianapolis, School of Science, May 7, 2007.

68. David E. Meltzer, Detecting and Addressing Students' Reasoning Difficulties in Thermal Physics, seminar at the University of Jyväskylä, Department of Physics, Jyväskylä, Finland, April 27, 2007.

67. David E. Meltzer, Research on the Learning and Teaching of Physics: Overview and Perspective, seminar at the University of Jyväskylä, Department of Physics, Jyväskylä, Finland, April 26, 2007.

66. David E. Meltzer, Multiple Representations in Physics Education: Recent Developments and Questions for Future Work, seminar/workshop at the University of Jyväskylä, Department of Teacher Education, Jyväskylä, Finland, April 25, 2007.

65. David E. Meltzer, Promoting Research-Based Development in Science and Mathematics Education, seminar at the University of Texas at Dallas, Department of Science and Mathematics Education, Richardson, Texas, April 19, 2007.

64. Warren Christensen, Student Conceptions of Entropy in an Introductory Physics Course, seminar at the University of Maine, Center for Science and Mathematics Education Research, Orono, Maine, April 12, 2007.

63. David E. Meltzer, The Role of Research in Improving Science Education, seminar at California State University, Chico, College of Natural Sciences, Chico, California, March 16, 2007.

62. Warren Christensen, Research on Student Learning and the Development of Effective Curriculum, seminar at West Chester University, Department of Physics, West Chester, Pennsylvania, February 8, 2007.

61. Warren Christensen, Physics Education Research: The Why and the How, seminar at St. Mary’s University, Department of Physics, Winona, Minnesota, January 26, 2007.

60. David E. Meltzer, Formative Assessment Materials for Large-Enrollment Physics Lecture Classes, invited talk and poster at the National STEM [Science, Technology, Engineering, and Mathematics] Assessment Conference: Assessment of Student Achievement [National Science Foundation ASA Program, Principal Investigators' Meeting], Washington, D.C., October 19-21, 2006.

59. David E. Meltzer, Investigations into Student Learning of Thermodynamics, invited talk at the 19th Biennial Conference on Chemical Education, West Lafayette, Indiana, August 2, 2006.

58. David E. Meltzer, Investigation of Student Learning in Thermodynamics and Implications for Instruction in Chemistry and Engineering, targeted poster [Session TP-C] at the 2006 Physics Education Research Conference, Syracuse, New York, July 27, 2006.

57. David E. Meltzer, Improving Instruction through Research on Student Learning: A Perspective from Physics, invited talk at the 61st Northwest Regional Meeting of the American Chemical Society, Reno, Nevada, June 27, 2006.

56. David E. Meltzer, Physics Education Research and its Impact on Classroom Instruction, plenary talk at the American Physical Society Northwest Section 2006 Annual Meeting, Tacoma, Washington, May 19, 2006.

55. David E. Meltzer, Addressing Students' Reasoning Difficulties in Thermal Physics, invited paper at the 2006 American Physical Society April Meeting, Dallas, Texas, April 25, 2006.

54. David E. Meltzer, Applying Physics Education Research to Teaching Thermodynamics, research talk at the American Physical Society High School Physics Teachers' Day, Dallas, Texas, April 21, 2006.

53. David E. Meltzer, Physics Education Research and the Improvement of Instruction, seminar at Michigan State University, Division of Science and Mathematics Education, East Lansing, Michigan, March 23, 2006.

52. Warren Christensen, Student Understanding of Entropy and the Second Law of Thermodynamics, seminar at the University of Washington, Department of Physics, Seattle, Washington, January 27, 2006.

51. David E. Meltzer, Frontiers and Challenges in Physics Education Research, plenary talk at the conference on Foundations and Frontiers in Physics Education Research, Bar Harbor, Maine, August 18, 2005.

50. David E. Meltzer, Evolution of Students' Reasoning Regarding Concepts in Thermal Physics, at the 2005 Summer Meeting of the American Association of Physics Teachers, Salt Lake City, Utah, August 9, 2005 [AAPT Announcer 35 (2), 112 (2005)].

49. David E. Meltzer, Laying the Basis for Improved Instruction through Physics Education Research, lecture at Arizona State University, Department of Physics and Astronomy, Tempe, Arizona, April 8, 2005.

48. David E. Meltzer, Investigating Student Learning and Improving Instruction through Physics Education Research, seminar at Florida International University, Department of Physics, Miami, Florida, March 15, 2005.

47. David E. Meltzer, Research in Physics Education and the Development of Improved Instruction, seminar at Southwest Missouri State University, Department of Physics, Astronomy, and Materials Science, Springfield, Missouri, November 18, 2004.

46. David E. Meltzer, Research in Physics Education and the Connection to Classroom Teaching, at the Fall Meeting of the Iowa Section of the American Association of Physics Teachers, Ames, Iowa, November 6, 2004.

45. David E. Meltzer, Diverse Representational Modes in the Learning of Physical Science: Issues and Challenges, poster presentation at the Second Annual Joint Meeting: Evaluation and Research Programs, Division of Research, Evaluation, and Communication, National Science Foundation, Washington, D.C., October 18-19, 2004.

44. David E. Meltzer, Improving Physics Teaching through Physics Education Research, at the Fall Meeting of the Illinois Section of the American Association of Physics Teachers, Peoria, Illinois, October 16, 2004.

43. David E. Meltzer, Student Learning in Upper-Level Thermal Physics: Comparisons and Contrasts with Students in Introductory Courses, targeted poster [Session TP-C] at the 2004 Physics Education Research Conference, Sacramento, California, August 5, 2004.

42. David E. Meltzer, How Do You Hit a Moving Target? Addressing the Dynamics of Students' Thinking, targeted poster [Session TP-A] at the 2004 Physics Education Research Conference, Sacramento, California, August 5, 2004.

41. David E. Meltzer, Students' Reasoning Regarding Fundamental Concepts in Thermodynamics: Implications for Instruction, at the 129th National Meeting of the American Association of Physics Teachers, Sacramento, California, August 3, 2004 [AAPT Announcer 34 (2), 121 (2004)].

40. David E. Meltzer, Investigation of Students' Reasoning in Thermodynamics and the Development of Improved Curricula, at the 2004 National Summer Conference Integrating Science and Mathematics Education Research into Teaching, University of Maine, Orono, Maine, June 21, 2004.

39. David E. Meltzer, Research-Based Active-Learning Instructional Methods in Large-Enrollment Physics Classes; Part III of Mini-Course on Physics Education Research and Research-Based Innovations in Physics Instruction, at the XII International Workshop New Trends in Physics Teaching, Faculty of Physical and Mathematical Sciences, Autonomous University of Puebla, Puebla, Mexico, May 30, 2004.

38. David E. Meltzer, Developing Improved Curricula and Instructional Methods based on Physics Education Research; Part II of Mini-Course on Physics Education Research and Research-Based Innovations in Physics Instruction, at the XII International Workshop New Trends in Physics Teaching, Faculty of Physical and Mathematical Sciences, Autonomous University of Puebla, Puebla, Mexico, May 29, 2004.

37. David E. Meltzer, Physics Education Research: Laying the Basis for Improved Instruction; Part I of Mini-Course on Physics Education Research and Research-Based Innovations in Physics Instruction, at the XII International Workshop New Trends in Physics Teaching, Faculty of Physical and Mathematical Sciences, Autonomous University of Puebla, Puebla, Mexico, May 28, 2004.

36. David E. Meltzer, Students' Reasoning Regarding Heat, Work, and the First Law of Thermodynamics, invited paper at the 2004 American Physical Society April Meeting, Denver, Colorado, May 1, 2004.

35. David E. Meltzer and Thomas J. Greenbowe, Research-based Curriculum Development in Thermodynamics, poster presentation at Invention and Impact: Building Excellence in Undergraduate Science, Technology, Engineering and Mathematics (STEM) Education; A Conference of the Course, Curriculum & Laboratory Improvement (CCLI) Program [National Science Foundation], Crystal City, Virginia, April 16-18, 2004.

34. David E. Meltzer, Research on Student Learning and the Development of Improved Physics Instruction, colloquium at University of Missouri-St. Louis, Department of Physics and Astronomy, St. Louis, Missouri, March 19, 2004.

33. David E. Meltzer, The Link to Improved Physics Instruction through Research on Student Learning, Physics Education Research Seminar at Purdue University, Department of Physics, West Lafayette, Indiana, February 2, 2004.

32. David E. Meltzer, Role of Diverse Representational Modes in the Learning of Physics, poster presentation and panel discussion at the Joint Arkansas-Oklahoma-Kansas and Nebraska American Association of Physics Teachers Section Meeting and Big 12 Physics Education Research Conference, Manhattan, Kansas, November 8, 2003.

31. David E. Meltzer, Investigation of Diverse Representational Modes in the Learning of Physics and Chemistry, presentation at the Principal Investigators and Contractors Meeting, Division of Research, Evaluation, and Communication (REC), National Science Foundation, Crystal City, Virginia, October 27, 2003.

30. David E. Meltzer, Physics Education Research in Perspective, colloquium at Iowa State University, Ames, Iowa, October 16, 2003.

29. David E. Meltzer, The Questions We Ask and Why: Methodological Orientation in PER, at the joint session of the 127th National Meeting of the American Association of Physics Teachers and the 2003 Physics Education Research Conference, Madison, Wisconsin, August 6, 2003. [AAPT Announcer 33 (2), 160 (2003)]

28. David E. Meltzer, New Directions in Physics Education, at the Iowa State University Physics and Astronomy Council annual meeting, Ames, Iowa, May 17, 2003.

27. David E. Meltzer, Active Learning in Large Classes, invited presentation at Iowa State University Center for Teaching Excellence Workshop Series: Enhancing Learning in Large Classes, Ames, Iowa, March 6, 2003.

26. David E. Meltzer, Investigating and Improving Student Learning through Physics Education Research, colloquium at the University at Buffalo, State University of New York, Buffalo, New York, February 25, 2003.

25. David E. Meltzer, The Process of Physics Education Research: From Investigation of Students' Reasoning to Improved Learning in the Classroom, Physics Education Research Seminar at Ohio State University, Columbus, Ohio, November 25, 2002.

24. David E. Meltzer, The Phases of Physics Education Research: Investigation of Student Reasoning, Curriculum Development, and Assessment of Instruction, colloquium at South Dakota State University, Brookings, South Dakota, November 21, 2002.

23. David E. Meltzer, The Role of Physics Education Research in Undergraduate Education, colloquium at Iowa State University, Ames, Iowa, September 30, 2002.

22. David E. Meltzer, Student Learning of Physics Concepts: Efficacy of Verbal and Written Forms of Expression in Comparison to Other Representational Modes, at the Conference on Ontological, Epistemological, Linguistic and Pedagogical Considerations of Language and Science Literacy: Empowering Research and Informing Instruction, University of Victoria, Victoria, British Columbia, Canada, September 13, 2002

21. David E. Meltzer, Students' Reasoning Regarding Heat, Work, and the First Law of Thermodynamics, at the New Approaches to Meteorology Education Course for University Faculty, Cooperative Program for Operational Meteorology, Education & Training (COMET), University Corporation for Atmospheric Research, Boulder, Colorado, August 13, 2002

20. David E. Meltzer and Richard R. Hake [joint presentation], Breakout Session I -- Issues related to quantitative methods and data analysis in PER, at the 2002 Physics Education Research Conference, Boise, Idaho, August 8, 2002.

19. David E. Meltzer, Observation, Measurement, and Data Analysis in PER: Methodological Issues and Challenges, at the 125th National Meeting of the American Association of Physics Teachers, Boise, Idaho, August 7, 2002. [AAPT Announcer 32 (2), 143 (2002)]

18. David E. Meltzer, Teaching Thermodynamics: How do Mismatches between Chemistry and Physics Affect Student Learning?, at the Iowa General Chemistry Network Meeting, Ames, Iowa, July 12, 2002.

17. David E. Meltzer, A New Century for Physics Education: Increased Effectiveness through Research-based Reform, at the ISU Physics and Astronomy Council annual meeting, Ames, Iowa, April 28, 2001.

16. David E. Meltzer and Thomas J. Greenbowe, Active-Learning Curricular Materials in Thermodynamics for Physics and Chemistry, at the Twelfth International Conference on College Teaching and Learning, Jacksonville, Florida, April 20, 2001.

15. David E. Meltzer, Student Learning in Thermodynamics: Exploring the Physics/Chemistry Connection, Physics Education Research Seminar at Ohio State University, Columbus, Ohio, February 26, 2001.

14. David E. Meltzer, Strengthening the Link between Research and Instruction in Physics Education, colloquium at Iowa State University, Ames, Iowa, February 19, 2001.

13. David E. Meltzer, The Role of Research in the Improvement of Physics Education, colloquium at Texas Tech University, Lubbock, Texas, November 9, 2000.

12. David E. Meltzer, Research in Physics Education: How Can it Help Us Improve Physics Instruction? All-day session at Korean Science Teachers Workshop, University of Iowa, Iowa City, Iowa, September 4, 2000.

11. David E. Meltzer, A Perspective on Teaching Physics Courses for Future Elementary-School Teachers, at the AAPT Physics Education Research Conference, Guelph, Ontario, Canada, August 3, 2000.

10. David E. Meltzer, Students' Conceptual Difficulties in Thermodynamics for Physics and Chemistry, at the Modeling Workshops planning meeting, Arizona State University, Tempe, Arizona, June 22, 2000.

09. David E. Meltzer, Students' Conceptual Difficulties in Thermodynamics for Physics and Chemistry: Focus on Free Energies, at the Gordon Research Conference on Physics Research and Education: Statistical and Thermal Physics, Plymouth, New Hampshire, June 14, 2000.

08. David E. Meltzer, What Have We Learned From Physics Education Research? And How Can It Help Us Teach Science More Effectively? Seminar at Northwestern State University of Louisiana, Natchitoches, Louisiana, November 15, 1999.

07. David E. Meltzer, Research in Physics Education as a Basis for Improved Instruction, colloquium at the University of Iowa, Iowa City, Iowa, September 27, 1999.

06. David E. Meltzer, Elementary Teacher Education: An Assessment Agenda, Co-chair's Introduction, Elementary Teacher Education session, at the AAPT Physics Education Research Conference, San Antonio, Texas, August 8, 1999.

05. David E. Meltzer, Assessment of Instructional Effectiveness in a Physics Course for Preservice Teachers, at the National Science Foundation Teacher Education Workshop, Washington, D.C., May 7, 1999.

04. David E. Meltzer, Inquiry-Based Instruction for Elementary Physics: Hi-Tech and Low-Tech, at the Tenth International Conference on College Teaching and Learning, Jacksonville, Florida, April 17, 1999.

03. David E. Meltzer, Research, Reform and Innovation in Physics Education, colloquium at the University of Northern Iowa, Cedar Falls, Iowa, February 18, 1999.

02. David E. Meltzer, Effectiveness of Introductory Physics Instruction: The Present Situation, and Pathways Toward Improvement, keynote address at the Iowa Association of Physics Teachers Section Meeting, Cedar Rapids, Iowa, November 7, 1998.

01. David E. Meltzer, Effectiveness of Instruction on Force and Motion in an Elementary Physics Course Based on Guided Inquiry, at AAPT Summer Meeting, Lincoln, Nebraska, August 9, 1998 [AAPT Announcer 28 (2), 125 (1998)].