Evaluating the attainable level of achievement of “cellular division and ınheritance” from the unit in grade 8 science and technology curriculum

Abstract

In this study, it was aimed to evaluate the attainable level of achievement of “cellular division and inheritance” from the unit in grade 8 science and technology curriculum. The research was conducted in a descriptive survey model. The study group of the research consisted of 80 8. grade students in 2 different schools, selected by purposeful sampling in Elazığ city centre in the academic year of 2014-2015. As a data collection tool, a multiple-choice success test was prepared by the researchers. In the substance analyses made as a result of the pilot application, the mean differentiation of the test was found to be ravg= 0.43. The reliability coefficient (KR-20) of this test, consisting of 30 items, was calculated as 0.81. In the analysis of the data, absolute success percentages were calculated which showed the level of achievements reached on the five subtopics of the concerned unit. According to the results obtained, the attainable level of achievement of “cellular division and inheritance” unit is as follows for each sub-problem: With respect to "mitotic division, 80.31%"; "62.8% for inheritance", "62.1% for meiotic division", "67.4% for DNA and Genetics" and "52.2% for adaptation of living beings to environment and evolution". It was also seen that 14 of the 30 target behaviours included in the unit were acquired by the students.