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Direct linkRyoo, Kihyun – Journal of Science Education and Technology, 2015
This study examines whether and how tapping into students' everyday language in a web-based learning environment can improve all students' science learning in linguistically heterogeneous classrooms. A total of 220 fifth-grade English Language Learners (ELLs) and their non-ELL peers were assigned to either an everyday English approach…
Descriptors: Technology Uses in Education, Technology Integration, Instructional Improvement, Science Instruction
Corotto, Frank; Ceballos, Darrel; Lee, Adam; Vinson, Lindsey – American Biology Teacher, 2010
Students commonly test the effects of chemical agents on the heart rate of the crustacean "Daphnia" magna, but the procedure has never been optimized. We determined the effects of three concentrations of ethanol, nicotine, and caffeine and of a control solution on heart rate in "Daphnia." Ethanol at 5% and 10% (v/v) reduced mean heart rate to…
Descriptors: Control Groups, Metabolism, Science Instruction, Science Education
Alkhawaldeh, Salem A. – Research in Science & Technological Education, 2007
The purpose of this study was to investigate the effectiveness of the conceptual change text oriented instruction over traditionally designed instruction on ninth grade students' understanding of the human circulatory system concepts, and their retention of this understanding. The subjects of this study consist of 73 ninth grade female students…
Descriptors: Foreign Countries, Grade 9, Human Body, Experimental Groups
