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Direct linkF. M. S. Lima – International Journal of Mathematical Education in Science and Technology, 2025
In this short note I present an elementary proof of irrationality for the number "e," the base of the natural logarithm. It is simpler than other known proofs as it does not use comparisons with geometric series, nor Beukers' integrals, and it does not assume that "e" is a rational number from the beginning.
Descriptors: Mathematical Logic, Number Concepts, Geometry, Equations (Mathematics)
Peer reviewedMaxfield, Margaret W. – International Journal of Mathematical Education in Science and Technology, 1976
Activities involving estimation of the number of objects in a configuration can motivate students to consider parametric models. (SD)
Descriptors: Curriculum, Geometry, Instruction, Learning Activities
