Diagnosis of Pre-Service Physics Teachers’ Conceptions in Geometric Optics

Author(s):

Derya KALTAKCIAli Eryilmaz

Conference:

ECER 2008

Network:

9. Assessment, Evaluation, Testing and Measurement

Format:

Paper

Session Information

09 SES 10A, Examination Practice within Teacher Education Praxis: Meaningful & Valid

Paper Session

Time:

2008-09-12

14:45-16:15

Room:

AK2 139

Chair:

Rolf Lander

Contribution

Students’ conceptions and reasoning in science have been studied over the last three decades. With this aim several studies have been conducted to depict students’ understanding in different physics topics such as mechanics (Clement, 1982; Halloun & Hestenes, 1985; McCloskey, 1983), electricity (McDermott & Shaffer, 1992; Shipstone, 1988), heat and temperature (Erickson, 1979, 1980; Rogan, 1988) or light (Guesne, 1985; Shapiro, 1989; Watts, 1985). Students’ conceptions affected by several factors including the teacher’s viewpoints (Gilbert, Osborne & Fensham, 1982). For this reason studying teacher conceptions would be beneficial in interpreting student conceptions. In order to measure conceptions different diagnostic tools have been developed and used. Interviews (Osborne & Gilbert, 1979; 1980; White & Gunstone, 1992), multiple choice tests (Hestenes, Wells, & Swackhamer, 1992; Tamir & Trembath as cited in Chen, Lin & Lin, 2002), and multiple-tier tests (Chen et al., 2002; Eryılmaz & Surmeli, 2002; Kaltakci & Didis, 2007; Kutluay, 2005; Pesman, 2005; Tsai & Chu, 2002) are used commonly to diagnose conceptions. Interviews have advantages as flexibility and obtaining in-depth information; but can be conducted on limited number of individuals. Multiple choice tests can be administered to a large number of individuals; but cannot investigate the students’ responses deeply (Fraenkel & Wallen, 2000). For this reason, researchers extended multiple choice tests into two or three-tier tests in order to compensate the limitations of interviews and the ordinary multiple choice tests used in diagnosing students’ conceptions. In two tier tests (Chen et al., 2002) students are asked the reason of their choice in the first tier. In three-tier tests (Eryılmaz & Sürmeli, 2002; Kaltakci & Didis, 2007; Kutluay, 2005; Peşman, 2005) in addition to the reasoning, in the third tier the students are asked about their confidence in the first two tiers. In this study senior pre-service physics teachers’ conceptions in geometrical optics will be diagnosed with a three-tier test and compared with the results of a previous study on eleventh grade high school students.

Method

Three-Tier Geometric Optic Misconception Test developed by Kutluay (2005) was administered to 30 senior pre-service physics teachers at Middle East Technical University (METU) in Turkey in 2006-2007 fall and spring semesters. The test consists 16 items with three-tiers each. Kutluay (2005) administered the test to 114 eleventh grade high school students and analyzed the test results. In the present study the same test was administered to pre-service teachers and the results will be compared with the previous results with eleventh grade students.

Expected Outcomes

The preliminary analysis of the tests results on pre-service physics teachers show some similarity between the conceptions of eleventh grade high school students and pre-service teachers. This result may suggest the importance of teacher education for scientific conceptions of high school students.

References

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Author Information

Derya KALTAKCI

Middle East Technical University

Departmant of Secondary Science and Mathematics Education

Ankara

212

Ali Eryilmaz

Middle East Technical University, Turkey

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