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| Cognitive Development | 1 |
| Curriculum | 1 |
| Educational Research | 1 |
| Elementary School Science | 1 |
| Laboratory Experiments | 1 |
| Learning Theories | 1 |
| Science Course Improvement… | 1 |
| Science Education | 1 |
| Scientific Methodology | 1 |
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| Science Education | 1 |
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| Bredderman, Ted | 1 |
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Peer reviewedBredderman, Ted – Science Education, 1974
This study attempted to determine at what grade levels children develop the ability to combine and control variables, the effect of the elementary science program on this development, and the relationship between a child's ability to control variables and his ability to form combinations of variables. (GS)
Descriptors: Cognitive Development, Curriculum, Educational Research, Elementary School Science
