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| Chen, Daniel M. | 1 |
| Rowan, Thomas E. | 1 |
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| Journal Articles | 3 |
| Guides - Classroom - Teacher | 2 |
| Opinion Papers | 1 |
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| Practitioners | 3 |
| Teachers | 3 |
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Peer reviewedMathematics Teacher, 1993
Presents methods for teaching two mathematical concepts that utilize visualization. The first illustrates a visual approach to developing the formula for the sum of the terms of an arithmetic sequence. The second develops the relationship between the slopes of perpendicular lines by performing a rotation of the coordinate axes and examining the…
Descriptors: Algebra, Discovery Learning, Generalization, Learning Activities
Peer reviewedRowan, Thomas E. – Arithmetic Teacher, 1990
Discusses teaching geometric concepts, including various shapes, patterns, and areas based on the NCTM Standards. Presented are activities for the geometric concepts. (YP)
Descriptors: Elementary Education, Elementary School Mathematics, Geometric Concepts, Geometric Constructions
Peer reviewedChen, Daniel M. – Engineering Design Graphics Journal, 1990
Presented is a proposed formula for determining the bearing angle and the slope angle for the line of intersection using the strike and dip angles of two given plane segments. Included is the development of the formula and three example problems. (KR)
Descriptors: College Science, Computer Assisted Design, Computer Assisted Instruction, Computer Graphics
