In D. Mewborn, P. Sztajn, E. White, H. Wiegel, R. Bryant, & K. Nooney (Eds.), Proceedings of the Twenty Fourth Annual Meeting of the North American Chapter of the International Group for the Psychology of Mathematics Education (Vol. 4, pp. 1658-1661). Eric Clearinghouse for Science, Mathematics, and Environmental Education.
ABSTRACT: The paper introduces the ·•eye-crick”.a n optical illusion, and argues for its viability o.sa didactlc means 10 mediate between young students’ na1uralls1lcp erceptualj udgments and mathematical descriptions of proponional equivalence classes (e.g., 2:3=4: 6=6:9=8: 12= … CIC.).