ijesim International Journal of Educational Studies in Mathematics 2148-5984 Ercan MASAL Other Fields of Education Alan Eğitimleri Developing an Observation Form to Determine the TPACK Usage Developing an Observation Form to Determine the TPACK Usage https://orcid.org/0000-0003-3403-8421 Kırıkçılar Rabia Gül MARMARA ÜNİVERSİTESİ, EĞİTİM BİLİMLERİ ENSTİTÜSÜ https://orcid.org/0000-0002-6428-188X Yıldız Avni BÜLENT ECEVİT ÜNİVERSİTESİ, EREĞLİ EĞİTİM FAKÜLTESİ 12 26 2019 6 4 172 181 10 03 2019 11 21 2019 Copyright © 2014, International Journal of Educational Studies in Mathematics 2014 International Journal of Educational Studies in Mathematics

By the help of the recent studies on student-centered teaching, students have now begun to shift from memorizing to the structuring the knowledge. The researches mention that learning requires active, continuous and effective use of information.It is stated that people who can easily reach the information needed in the solution of any problem and who can add new ones to them are the people who achieve lifelong learning. One of the tasks for teachers is to show students how to achieve lifelong learning and especially how knowledge can be used in every aspect of life. There are several studies indicate that this information will be obtained more easily by integrating technology into education. Although there are observation forms that reveal the activities of teachers in the preparation of lesson activities, there are no ones measuring the Technological Pedagogical Content Knowledge in the course preparation processes. To the purpose of this study is to develop a valid, reliable and useful observation form for determining TPACK usage in secondary school mathematics teachers' dynamic software GeoGebra. In this study, the observation form was developed in 3 stages, namely research, pilot study, and evaluation. After the pilot study was completed, expert opinions were taken and the theoretical form was utilized. Lawshe technique was used to determine the content validity ratio. In addition, the teachers showed some behaviors not found in the observation form. These new behaviors have been evaluated and revised by the experts and finalized with the studies for the content validity.

By the help of the recent studies onstudent-centered teaching, students have now begun to shift from memorizing tothe structuring the knowledge. The researches mention that learning requiresactive, continuous and effective use of information. It is stated that people who can easily reachthe information needed in the solution of any problem and who can add new onesto them are the people who achieve lifelong learning. One of the tasks forteachers is to show students how to achieve lifelong learning and especiallyhow knowledge can be used in every aspect of life. There are several studiesindicate that this information will be obtained more easily by integratingtechnology into education. Although there are observation forms that reveal theactivities of teachers in the preparation of lesson activities, there are no onesmeasuring the Technological Pedagogical Content Knowledge in the coursepreparation processes. To the purpose of this study is to develop a valid,reliable and useful observation form for determining TPACK usage in secondaryschool mathematics teachers' dynamic software GeoGebra. In this study, theobservation form was developed in 3 stages, namely research, pilot study, andevaluation. After the pilot study was completed, expert opinions were taken andthe theoretical form was utilized. Lawshe technique was used to determine thecontent validity ratio. In addition, the teachers showed some behaviors notfound in the observation form. These new behaviors have been evaluated andrevised by the experts and finalized with the studies for the content validity.

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