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The Emergence of a Learning Progression in Middle School Chemistry
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Johnson, Philip; Tymms, Peter – Journal of Research in Science Teaching, 2011
Previously, a small scale, interview-based, 3-year longitudinal study (ages 11-14) in one school had suggested a learning progression related to the concept of a substance. This article presents the results of a large-scale, cross-sectional study which used Rasch modeling to test the hypothesis of the learning progression. Data were collected from…
Descriptors: Computer Assisted Testing, Chemistry, Measures (Individuals), Foreign Countries