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An Experiment in Teaching Basic Sci
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05 level activities analysis of variance answers asked attitudes cent child classroom coefficient cognitive concept development Concept Test conservation control group correlation course critical thinking determine effective elementary school science elementary science evaluation experience experimental F-ratio Factor fourth grade girls grade level Graduate Record Examination indicated individual instrument investigation Jean Piaget laboratory learning logical mathematics McGuire-White mean measure mental mental models methods Minneapolis Public Schools multiple choice nature of science null hypothesis objectives observed performance post-test problem problem-solving behavior procedure programmed materials pupils reading level relationship responses sample science abilities science achievement science curriculum materials science education science materials science program science supervisors science teachers science textbook scientific scientific method scientists scores selected sequence significant difference sixth-grade solving strategies of inquiry subjects Table teacher education teaching science technique tion treatment understanding versions