See Inside February/March 2007



I enjoyed reading "The Eureka Moment," by Guenther Knoblich and Michael Oellinger. The authors give a puzzle ("Puzzle Two") with the objective of having readers calculate the combined area of a square and a parallelogram. The solution given (that is, treating the figure as two overlapping triangles) is creative. But I am not certain of its advantage over standard geometric computation.

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