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| Arithmetic Teacher | 1 |
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| Wheatley, Grayson H. | 1 |
| Yackel, Erna | 1 |
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| Journal Articles | 1 |
| Reports - Research | 1 |
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Peer reviewedYackel, Erna; Wheatley, Grayson H. – Arithmetic Teacher, 1990
Describes two instructional activities to develop spatial imagery and the pupil's responses to these activities. Discusses how the classroom atmosphere contributed to the success of the activities. (YP)
Descriptors: Elementary Education, Elementary School Mathematics, Geometric Concepts, Geometry
