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Simoson, Andrew J. – PRIMUS, 2009
This article presents a fun activity of generating a double-minded fractal image for a linear algebra class once the idea of rotation and scaling matrices are introduced. In particular the fractal flip-flops between two words, depending on the level at which the image is viewed. (Contains 5 figures.)
Descriptors: Geometric Concepts, Matrices, Mathematics Instruction, Mathematical Concepts
Simoson, Andrew J. – PRIMUS, 2007
For a given orbital period and eccentricity, we determine the maximum time lapse between the winter solstice and the spring equinox on a planet. In addition, given an axial precession path, we determine the effects on the seasons. This material can be used at various levels to illustrate ideas such as periodicity, eccentricity, polar coordinates,…
Descriptors: Astronomy, Calculus, Algebra, Geometry