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Lankford, Deanna; Friedrichsen, Patricia – American Biology Teacher, 2012
Diffusion and osmosis are important biological concepts that students often struggle to understand. These are important concepts because they are the basis for many complex biological processes, such as photosynthesis and cellular respiration. We examine a wide variety of representations used by experienced teachers to teach diffusion and osmosis.…
Descriptors: Biology, Science Instruction, Scientific Concepts, Sequential Approach
Halverson, Kristy Lynn; Lankford, Deanna Marie – American Biology Teacher, 2009
The authors have developed a lesson to investigate basic principles of ecology, more specifically niche partitioning, while using a jigsaw activity that explores galling insects' interactions with goldenrods. Not only does this lesson capture secondary students' interest and keeps them engaged in hands-on activities, the content addresses two…
Descriptors: Science Activities, Entomology, Ecology, Science Instruction