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Book Review. Idit Harel, "Children Designers," 1991, Norwood, NJ: Ablex Publishing Company, 434 pp.

Peer reviewed

Harel, Idit – Educational Studies in Mathematics, 1993

Descriptors: Computer Software Development, Courseware, Elementary Secondary Education, Instructional Innovation

Capturing Congruence with a Turtle.

Peer reviewed

Zaskis, Rina; Leron, Uri – Educational Studies in Mathematics, 1991

The LOGO subroutine turtle geometry and Euclidean geometry are compared with respect to their treatment of similarity and difference of plane figures. The problem and its proposed solution of introducing a FLIP operation are viewed briefly from the perspectives of mathematics, computer science, and education. (MDH)

Descriptors: Classroom Techniques, Computer Assisted Instruction, Computer Software Development, Geometry