Knowledge Of The Teachers' Designs Of The Titration Arrangement
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Ondokuz Mayıs Üniversitesi
In science education, three-dimensional images can be reduced to two-dimensional and some missing parts can be transmitted on paper.In this direction, the research was aimed at studying the drawings of the titration arrangement of the science teacher candidates.The research was attended by 65 teachers candidates who studied in the third class of science knowledge education.In the investigation the situation was identified.For the collection of data, the teacher candidates were asked to test the titration of fruit water in the course of science laboratory practices-II and to draw the shape of the titration arrangement the next week.A checklist was created by researchers for the analysis of the drawings.In the check list there are two expressions, "Are (1 point) -No (0 point)."The created drawings are studied in terms of whether or not they contain "burt, slurry / bear, titrating material, analytical material, sports foot and scratch".The study found that the teaching candidates were all drawn up by the nearby bridges (%100) and bridges (%98); most of them show sports foot (%72) and bridges (%72); however, fewer number of teaching candidates found that the titrants (%43) and analytics (%43) were expressed in the drawings.In addition, it can be said that 14 teachers candidates indicate all categories in their drawings, but that number is insufficient.From these findings, it may be suggested that the teachers candidates who will be the teachers of the future should express the two-dimensional drawings of the three-dimensional experimental arrangements as carefully as possible to prevent possible conceptual errors that may occur in their students.Abstract: in science education, some missing parts can be found in the transfer of three-dimensional visuals onto paper by reducing them to two-dimensions.in this study, it was aimed to examine the titration mechanism drawings of preservice science teachers.65 preservice teachers studying in the third grade of science education department participated in the study.The case study was conducted in the research.in order to collect the data, preservice teachers were given a titration of fruit juice experiment in science laboratory applications-II course and asked to draw the shape of the titration mechanism in the following week.a checklist was prepared by the researchers for the analysis of the drawings.There are two statements in the checklist, namely "available (1 point)unavailable (0 point)".the drawings were examined in terms of whether or not "burette, swallowing flask / beherglas, titrant material, analyte material, stand and clamp".as a result of the research, it was observed that all of the preservice teachers drew burette (100%) and erlenmeyer flask / beherglas (98%); most of them showed stand (72%) and clamp (72%); however, it was found that fewer teacher candidates expressed titrant (43%) and analyte (43%) items in the drawings.in addition, it can be said that 14 preservice teachers stated all categories in their drawings, but this number was insufficient.based on these findings, it can be suggested that preservice science teachers, who will be the teachers of the future, should carefully express the two-dimensional drawings of the three-dimensional experimental settings in order to prevent possible misconceptions in their students.
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