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Siler, Stephanie Ann; Klahr, David – Journal of Educational Psychology, 2016
One obstacle to understanding abstract concepts such as the "control of variables" strategy (CVS) is the tendency for learners to focus on surface rather than deep features in instructional materials. However, in tasks such as learning CVS, these same surface features may also support understanding, provided learners realize the…
Descriptors: Middle School Students, Learning, Science Experiments, Research Design
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To-im, Jongdee; Ruenwongsa, Pintip – Journal of Natural Resources and Life Sciences Education, 2009
Using mini-aquaria experiments, a learning unit on the effects of light period on aquatic ecosystems was developed for 7th grade students. This guided inquiry unit was aimed at helping students understand basic ecological principles involved in relationships among physical, chemical, and biological components in aquatic ecosystems. It involved…
Descriptors: Investigations, Student Attitudes, Learning Activities, Observation