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    Comparing the probability-related misconceptions of pupils at different education levels
    (Fac Teacher Education, 2012) Gurbuz, Ramazan; Birgin, Osman; Catlioglu, Hakan
    The aim of the paper is to compare and evaluate the probability-related misconceptions of pupils at different education levels. A cross-sectional/age study was thus conducted with 540 pupils in 5th-8th grades. An instrument, comprising six questions on the concepts of compound events, probability of an event and probability comparisons, was used. Data were analyzed using descriptive statistical techniques(SPSS 15.0) and the chi-square test. This study showed that the percentage of correct answers increased when the level of education increased, whereas the misconceptions about the concept of compound events I decreased; also, the percentage of correct answers decreased and the misconceptions about the concept of compound events II increased. In the questions related to the concept of probability of an event and probability comparisons, as the level of education increased both the percentage of correct answers and the misconceptions increased. Therefore, it can be suggested that pupils' misconceptions regarding probability concepts vary, which depends on the characteristics of such concepts and pupils' age and education level.
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    Öğe
    Determining eighth grade students' understandings and difficulties of linear functions
    (Sila Science, 2012) Birgin, Osman; Gurbuz, Ramazan; Catlioglu, Hakan
    The aim of this study is to determine eighth grade students' understandings and difficulties of linear functions, especially on transition between line graphs and equations. This study was conducted with sixty 8th grade students from Turkey. A nine-item instrument demanding written answers about graphical and algebraic representations of linear equations and theirs graphs was used. It was found that students mostly have difficulties about transferring from graphical to algebraic representation. It was also determined that some students could not comprehend the connection between slope, x and y-intercepts. This study revealed that many students' understandings of line graph and its equation was superficial. The results provide us a means for discussing students' conceptualizations and difficulties of linear functions and also allow us to consider further educational implications in mathematics education.
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    Öğe
    An investigation of pre-service mathematics teachers' perceptions related to the importance of measurement and assessment methods
    (Sila Science, 2012) Birgin, Osman; Gurbuz, Ramazan; Catlioglu, Hakan
    The purpose of this study is to examine pre-service mathematics teachers' (PSM teachers) perceptions related to the importance of measurement and assessment tools and methods. This study was conducted with 124 senior primary and secondary PSM teachers in Turkey. As instrument, a scale consisting of 4 sub-factors and twenty four 5-point Likert type items was used regarding the measurement and assessment methods. The data were analyzed using SPSS software program with one-way ANOVA and independent samples t-test. In this study, it was determined that PSM teachers perceived the performance and traditional assessment methods as the most important, while they perceived the objective assessment methods as the least important. It was also revealed that their perceptions of importance about some of the alternative assessment methods were not at the expected level. In addition, it was found that there were no significant differences among PSM teachers' perceptions towards assessment tools and methods in terms of gender and branch.