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[Phys-l] A conversation with Eric Mazur



Jerry Becker (2007) recently copied into the open Math-Teach archives <http://mathforum.org/kb/forum.jspa?forumID=206> a New York Times article by Claudia Dreifus (2007) titled "A Conversation With Eric Mazur: Using the 'Beauties of Physics' to Conquer Science Illiteracy."

To see Becker's post with its copy of Dreifus (2007) simply click on <http://mathforum.org/kb/thread.jspa?threadID=1597751&tstart=0>.

A telling portion of the exchange between Dreifus (Q) and Mazur (A) is [bracketed by lines
"Q&A-Q&A-Q&A. . . . ."; my insert at ". . . . .[insert]. . . . .", my CAPS]

Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A
Q. Do you think you're better than the instructors you experienced as a student?

A. When I first started teaching here in the 1980s, I didn't ask myself such questions. I DID WHAT EVERYONE ELSE DID: LECTURES. And the feedback was positive. The students did well on what I considered difficult exams.

Around 1990, I learned of the work of David Hestenes. . . . .[Halloun & Hestenes (1985a,b)]. . . . ., an Arizona State physicist studying how abysmally students in his region did in science. He'd given hundreds of undergraduates a test in concept comprehension before and after they'd taken their physics classes. The tests showed that even with a term of instruction, their understanding hadn't improved very much.

I felt challenged by this. I then tested my own Harvard students similarly. We had discussed Newtonian mechanics earlier in the semester, and the students had already solved some difficult problems. Yet, when I gave them a new "concept-based" exam, ABOUT HALF HAD NO CLUE AS TO WHAT NEWTONIAN MECHANICS WERE ABOUT.

Q. Perhaps this concept-based test was flawed?

A. No. But it was different. It measured their knowledge of physics forces in daily life. If they'd really understood Newtonian mechanics, they would have aced it. One student asked me: "How should I answer these questions? According to what you taught me? Or according to the way I usually think about these things?"

THAT WAS THE MOMENT I FELL OUT OF MY IVORY TOWER. It was then that I began to consider new ways of teaching. . . . . .[see e.g., Crouch & Mazur (2000), Fagen et al. (2002), Lorenzo et al. (2006), Rosenberg et al. (2006), Crouch et al. (2007)] . . . . .
Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A-Q&A

It's interesting that Math-Teach's mathematically correct <http://www.mathematicallycorrect.com/> math warriors, who continually berate all forms of pedagogy other than direct instruction, choose not to comment on Mazur's statements:

"I did what everyone else did: lectures. And the feedback was positive.. . . . when I gave them. . . [the Halloun-Hestenes (1985a) concept-based exam]. . . about half had no clue as to what Newtonian mechanics were about."

I shall forego enumerating the research that is consistent with Mazur's experience and with a nearly two-standard deviation superiority [Hake (1998a,b; 2002a,b] in normalized conceptual gains of interactive engagement pedagogy over traditional direct instruction: Redish, Saul, & Steinberg, 1997; Saul, 1998; Francis, Adams, & Noonan, 1998; Heller, 1999; Redish & Steinberg, 1999; Redish, 1999; Beichner et al., 1999; Cummings, Marx, Thornton, & Kuhl, 1999; Novak, Patterson, Gavrin, & Christian, 1999; Bernhard, 2000; Crouch & Mazur, 2001; Johnson, 2001; Meltzer, 2002a, 2002b; Meltzer & Manivannan, 2002; Savinainen & Scott, 2002a, 2002b); Steinberg & Donnelly, 2002; Fagan, Crouch, & Mazur, 2002; Van Domelen & Van Heuvelen, 2002;, and Belcher, 2003; Dori & Belcher, 2004; Hoellwarth, Moelter, & Knight, 2005; Lorenzo, Crouch, & Mazur, 2006; & Rosenberg, Lorenzo, & Mazur, 2006. [For the references see Hake (2007).]

Is there a mathematics test comparable to the Halloun-Hestenes or the Force Concept Inventory that might be used to test the superiority claimed by the Mathematically Correct crowd for direct instruction? Yes, the "Calculus Concept Inventory" [Epstein (2007)]. Contact Jerry Epstein <jepstein@duke.poly.edu> for the details.


Richard Hake, Emeritus Professor of Physics, Indiana University
24245 Hatteras Street, Woodland Hills, CA 91367
<rrhake@earthlink.net>
<http://www.physics.indiana.edu/~hake>
<http://www.physics.indiana.edu/~sdi>


REFERENCES
Becker, J. 2007. "READ THIS - A conversation with Eric Mazur," Math-Teach post of 20 July 2007 12:42 PM; online at <http://mathforum.org/kb/thread.jspa?threadID=1597751&tstart=0>.

Crouch, C. H. & E. Mazur. 2001. "Peer Instruction: Ten Years of Experience and Results,"
Am. J. Phys., 69, 970-977; online at
<http://mazur-www.harvard.edu/publications.php?function=search&topic=8>,

Crouch, C., J. Watkins, A. Fagen, & E. Mazur. 2007. "Peer Instruction: Engaging students one-on-one, all at once," in "Research-Based Reform in University Physics," E.F. Redish, ed.; online at <http://mazur-www.harvard.edu/publications.php?function=search&topic=8>.

Epstein, J. 2006. "The Calculus Concept Inventory," abstract online at "2006 Conference on Research in Undergraduate Mathematics Education, online at <http://mathed.asu.edu/CRUME2006/Abstracts.html>, scroll down about one third of the way to the bottom.

Fagen, A.P., C.H. Crouch, & E. Mazur. 2002. "Peer Instruction: Results from a Range of
Classrooms," Physics Teacher 40, 206-209; online at <http://tinyurl.com/sbys4>.

Lorenzo, M., C.H.Crouch, & E. Mazur. 2006. "Reducing the gender gap in the physics
Classroom," American Journal of Physics 74(2)L 118-122; online at
<http://mazur-www.harvard.edu/publications.php?function=search&topic=9>.

Dreifus. C. 2007. "A Conversation With Eric Mazur: Using the 'Beauties of Physics' to Conquer Science Illiteracy," freely online for a short time at <http://www.nytimes.com/2007/07/17/science/17conv.html?_r=1&oref=slogin>.

Hake, R.R. 2007. "Design-Based Research in Physics Education Research: A Review," in A.E. Kelly, R.A. Lesh, & J.Y. Baek (in press), "Handbook of Design Research Methods in
Mathematics, Science, and Technology Education." Lawrence Erlbaum. Online at
<http://www.physics.indiana.edu/~hake/DBR-Physics3.pdf >(1.1MB)

Halloun, I. & D. Hestenes. 1985a. "The initial knowledge state of college physics students." Am. J. Phys. 53:1043-1055; online at <http://modeling.asu.edu/R&E/Research.html>. Contains the "Mechanics Diagnostic" test, precursor to the "Force Concept Inventory" [Hestenes et al. (1992)].

Halloun, I. & D. Hestenes. 1985b. "Common sense concepts about motion." Am.
J. Phys. 53:1056-1065; online at <http://modeling.asu.edu/R&E/Research.html>.

Hestenes, D., M. Wells, & G. Swackhamer. 1992. "Force Concept Inventory," Phys. Teach. 30:
141-158; online (except for the test itself) at <http://modeling.asu.edu/R&E/Research.html>.
The 1995 revision by Halloun, Hake, Mosca, & Hestenes is online (password protected) at the
same URL, and is available in English, Spanish, German, Malaysian, Chinese, Finnish, French,
Turkish, Swedish, and Russian.

Rosenberg, J., Lorenzo, M., & Mazur, E. (2006). Peer instruction: Making science engaging. In
J. J. Mintzes and W. H. Leonard (Eds.) Handbook of College Science Teaching (pp. 77-85).
Arlington, VA: NSTA Press. Retrieved on 5 March 2007 from
<http://mazur-www.harvard.edu/sentFiles/Mazur_22532.pdf>.