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Kost, Franklin – Journal of Computers in Mathematics and Science Teaching, 1988
Presents a program written in USCD Pascal that simulates a system routine. Illustrates standard and user defined boolean and string functions and string procedures. Details the processing operations. (CW)
Descriptors: Computer Assisted Instruction, Computer Science, Computer Uses in Education, Courseware

Dreyfus, Tommy – Journal of Computers in Mathematics and Science Teaching, 1988
Proposes to modify the procedure proposed by Abelson and diSessa to produce a polygonal path with vertices that lie exactly on an ellipse. Provides a detailed proof. Implements a limiting process to produce the best possible approximation to any ellipse for any given screen resolution. (CW)
Descriptors: Computer Assisted Instruction, Computer Graphics, Computer Science, Computer Uses in Education