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Using Valid and Invalid Experimental Designs to Teach the Control of Variables Strategy in Higher and Lower Achieving Classrooms
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Lorch, Robert F., Jr.; Lorch, Elizabeth P.; Freer, Benjamin Dunham; Dunlap, Emily E.; Hodell, Emily C.; Calderhead, William J. – Journal of Educational Psychology, 2014
Students (n = 1,069) from 60 4th-grade classrooms were taught the control of variables strategy (CVS) for designing experiments. Half of the classrooms were in schools that performed well on a state-mandated test of science achievement, and half were in schools that performed relatively poorly. Three teaching interventions were compared: an…
Descriptors: Science Instruction, Teaching Methods, Elementary School Science, Elementary School Students
Learning the Control of Variables Strategy in Higher and Lower Achieving Classrooms: Contributions of Explicit Instruction and Experimentation
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Lorch, Robert F., Jr.; Lorch, Elizabeth P.; Calderhead, William J.; Dunlap, Emily E.; Hodell, Emily C.; Freer, Benjamin Dunham – Journal of Educational Psychology, 2010
Students (n = 797) from 36 4th-grade classrooms were taught the control of variables strategy for designing experiments. In the instruct condition, classes were taught in an interactive lecture format. In the manipulate condition, students worked in groups to design and run experiments to determine the effects of four variables. In the both…
Descriptors: Lecture Method, Experiments, Predictor Variables, Pretests Posttests