Investigates the question concerning the maximum number of lines of symmetry possessed by irregular polygons. Gives examples to illustrate and justify the generalization that the number of lines of symmetry equals the largest proper divisor of the number of sides. Suggests related classroom activities. (MDH)

Suggests that elementary school students should be introduced to science research by involving them in group projects. Argues that this type of collaborative approach is more motivating for the students, and produces less anxiety and a better understanding of the steps involved in scientific methodology. (TW)