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Papageorgiou, George; Markos, Angelos; Zarkadis, Nikolaos – Science Education International, 2016
This work investigates the formation of particular student profiles based on of their ideas relating to basic characteristics of the atom. Participants were secondary students of 8th, 10th and 12th grades from Northern Greece (n = 421), with specific cohort characteristics e.g. age, grade and class curriculum, and individual differences, e.g.…
Descriptors: Foreign Countries, Secondary School Students, Grade 8, Grade 10
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Greenes, Carole E.; Cavanagh, Mary C.; Tsankova, Jenny K.; Glanfield, Florence A. – Mathematics Teaching in the Middle School, 2013
In the authors' examination of various instructional programs, they observed that most provide all the necessary data to solve proportion problems, employ compatible numbers that are usually unrealistic, present numbers (data) in the order in which they are to be manipulated, discuss contexts that cannot be easily replicated, and present…
Descriptors: Mathematical Concepts, Mathematics Instruction, Class Activities, Middle School Students