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Aysegül Derman; Figen Gunes; Ozcan Gulacar; Ingo Eilks – Chemistry Education Research and Practice, 2024
This study aims to determine the cognitive structures of students at different educational levels (8th grade and 12th grade) related to acid-base chemistry. The research was designed as a case study and structured in two stages. The first stage analyzed concepts related to acid-base chemistry and their direction and strength in students' knowledge…
Descriptors: Chemistry, Science Instruction, Cognitive Structures, Grade 8
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Papageorgiou, George; Markos, Angelos; Zarkadis, Nikolaos – Chemistry Education Research and Practice, 2016
The current study aims to investigate students' representations of the atomic structure in a number of student cohorts with specific characteristics concerning age, grade, class curriculum and some individual differences, such as formal reasoning and field dependence/independence. Two specific task contexts, which were designed in accordance with…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Nuclear Energy
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Bernholt, Sascha; Parchmann, Ilka – Chemistry Education Research and Practice, 2011
Current reforms in the education policy of various countries are intended to produce a paradigm shift in the educational system towards an outcome orientation. After implementing educational standards as normative objectives, the development of test procedures that adequately reflect these targets and standards is a central problem. This paper…
Descriptors: Science Achievement, Chemistry, Knowledge Level, Science Instruction