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Salta, Katerina; Tzougraki, Chryssa – Research in Science Education, 2011
The students' performance in various types of problems dealing with the conservation of matter during chemical reactions has been investigated at different levels of schooling. The participants were 499 ninth grade (ages 14, 15 years) and 624 eleventh grade (ages 16, 17 years) Greek students. Data was collected using a written questionnaire…
Descriptors: Low Achievement, Chemistry, Problem Solving, Correlation
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Artdej, Romklao; Ratanaroutai, Thasaneeya; Coll, Richard Kevin; Thongpanchang, Tienthong – Research in Science & Technological Education, 2010
This study involved the development of a two-tier diagnostic instrument to assess Thai high school students' understanding of acid-base chemistry. The acid-base diagnostic test (ABDT) comprising 18 items was administered to 55 Grade 11 students in a science and mathematics programme during the second semester of the 2008 academic year. Analysis of…
Descriptors: Classification, Comprehension, Diagnostic Tests, Chemistry