Abstract
What computational estimation skills and strategies do Mexican students possess? Does the theoretical model based on interviews with a select United States sample accurately describe the Mexican sample?
These were questions studied based on interviews with 8 eighth graders (those scoring in the top 5%) out of a sample of 177 eighth graders from twelve different Mexican schools representing a range of social and economic backgrounds. Preliminary screening data collected by administering a computational estimation test revealed that estimation was very difficult for the Mexican students (mean 4.0, range of 0 to 18 on the 38-item open-ended test).
The interviews revealed that the Mexican students as a whole did employ the three general cognitive processes outlined in the theoretical model, namely reformulation, translation, and compensation. The most common strategy employed was the front-end technique. Similarly, a frequent strategy used to “estimate” was mentally applying a paper/pencil algorithm. In contrast to data collected under similar conditions in Japan and the United States, rounding was a strategy only occasionally used in the interviews. The use of benchmarks (key reference points used as bounds in forming an estimate) as a strategy for estimating problems involving percent was common and may reflect students' “out-of-school” experience with mathematical applications. Consistent with parallel investigations with Japanese and United States students, these Mexican strudents rarely reflected on their estimates through their own initiative and rarely recognized unreasonable estimates.
Similar content being viewed by others
References
Carpenter, T. P., Corbitt, M. K., Kepner, H. S., Lindquist, M. M., and Reys, R. E.: 1980, ‘Results and implications of the second NAEP mathematics assessment: elementary school’, Arithmetic Teacher 27(8), 10–12, 44–47.
Carraher, T. N., Carraher, D. W., and Schliemann, A. D.: 1985, ‘Mathematics in the street and in the schools’, British Journal of Developmental Psychology 13, 21–29.
Cockroft, W. H.: 1982, Mathematics Counts, Her Majesty's Stationery Office, London.
Conference Board of the Mathematical Sciences: 1989, Everybody Counts: A Report to the Nation of the Future of Mathematics Education, National Academy Press, Washington, D.C.
Japan Ministry of Education: 1989, Curriculum of Mathematics for the Elementary School, Printing Bureau, Tokyo.
National Council of Supervisors of Mathematics: 1989, ‘Essential mathematics for the twenty-first century: the position of the National Council for Supervisors of Mathematics’, Mathematics Teacher 82, 388–391.
National Council of Teachers of Mathematics: 1989, Curriculum and Evaluation Standards for School Mathematics, Reston, VA.
Reys, R. E.: 1986, ‘Evaluating computational estimation’, in H. L. Schoen and M. J. Zweng (eds.), Estimation and Mental Computation, 1986 Yearbook, National Council of Teachers of Mathematics, Reston, VA.
Reys, R. E.: 1988, ‘Testing computational estimation’, Arithmetic Teacher 35(7), 28–30.
Reys, R. E., Bestgen, B. J., Rybolt, J. F., and Wyatt, J. W.: 1980, Identification and Characterization of Computational Estimation Processes Used by In-School Pupils and Out-of-School Adults, Report No. 79-0088, National Institute of Education, Washington, D.C.
Reys, R. E., Bestgen, B. J., Rybolt, J. F., and Wyatt, J. W.: 1982, ‘Processes used by good computational estimators’, Journal for Research in Mathematics Education 13, 183–201.
Reys, R. E., Reys, B. J., Nohda, N., Ishida, J., Yoshikawa, S., and Shimizu, K.: 1991, ‘Computational estimation performance and strategies used by fifth and eighth grade Japanese students’, Journal for Research in Mathematics Education 22, 39–58.
Rubenstein, R. N.: 1985, ‘Computational estimation and related mathematical skills’, Journal for Research in Mathematics Education 16, 106–119.
Solana, F., Cardiel Reyes, R., and Bolaños, R.: 1981, Historia de la educación pública en México, Fondo de Cultura Económica, México.
Sowder, J. T. and Wheeler, M. M.: 1989, ‘The development of concepts and strategies used in computational estimation’, Journal for Research in Mathematics Education 20, 132–146.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Reys, B.J., Reys, R.E. & Peñafiel, A.F. Estimation performance and strategy use of Mexican 5th and 8th grade student sample. Educ Stud Math 22, 353–375 (1991). https://doi.org/10.1007/BF00369295
Issue Date:
DOI: https://doi.org/10.1007/BF00369295