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Peer reviewedRaghavan, Kalyani; Sartoris, Mary L.; Glaser, Robert – Journal of Research in Science Teaching, 1998
Reviews research on children's ideas about floating and sinking. Describes the Model-Assisted Reasoning in Science (MARS) project curriculum and student responses to a question about helium balloons. Contains 61 references. (DDR)
Descriptors: Computer Uses in Education, Concept Formation, Elementary Secondary Education, Interviews
Direct linkKuo, Rita; Lien, Wei-Peng; Chang, Maiga; Heh, Jia-Sheng – Educational Technology & Society, 2004
This paper proposes a methodology to calculate both the difficulty of the basic problems and the difficulty of solving a problem. The method to calculate the difficulty of problem is according to the process of constructing a problem, including Concept Selection, Unknown Designation, and Proposition Construction. Some necessary measures observed…
Descriptors: Problem Solving, Identification, Planning, Difficulty Level
Download full textSavelsbergh, Elwin R.; Ferguson-Hessler, Monica G. M.; de Jong, Ton – 1997
This study of physics problem-solving identifies reasoning mechanisms that enable the problem-solver to achieve the transformation to a physics structure of the problem situation. Elaboration is explored as a mechanism in fulfilling this transformation by providing beginning problem-solvers with elaborations that they failed to infer. A card…
Descriptors: Computer Uses in Education, Course Content, Curriculum Development, Educational Change
