Descriptor
| Computation | 1 |
| Learning Activities | 1 |
| Mathematical Concepts | 1 |
| Mathematics Instruction | 1 |
| Models | 1 |
| Multiplication | 1 |
| Problem Solving | 1 |
| Secondary Education | 1 |
| Secondary School Mathematics | 1 |
| Transformations (Mathematics) | 1 |
Source
| Mathematics Teacher | 1 |
Author
| Roberts, Ralph E. | 1 |
| Zlot, William | 1 |
Publication Type
| Guides - Classroom - Teacher | 1 |
| Journal Articles | 1 |
Education Level
Audience
| Practitioners | 1 |
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewedZlot, William; Roberts, Ralph E. – Mathematics Teacher, 1982
Certain properties of lenses provide a physical model of the mathematical concepts of multiplication of integral numbers and of similarity transformations in geometry. Further, they can provide a realistic concrete representation for rules governing multiplication of signed numbers. Suggestions for problems and classroom demonstrations involving…
Descriptors: Computation, Learning Activities, Mathematical Concepts, Mathematics Instruction
