Study of the performance of nearly 2,000 students in grades 2 through 9 on a variety of mental computation tasks using visual and oral presentation found a wide variation in performance within the sample of each country at each grade level. (33 references) (MKR)

The author describes a new graphing algorithm for computing probabilities, and presents problems for these algorithms for use in the classroom. (SD)

The importance of teaching computational estimation is discussed, with note of its increased significance because of widespread use of calculators and the need to develop number sense. The reason for its failure to be taught is traced to the multiplicity of methods, and some detailed suggestions are therefore presented. (MNS)

A study of 255 fifth graders and 177 eighth graders from 12 randomly chosen Mexican schools was conducted to identify and characterize the students' computational estimation skills and strategies. Data from computational estimation tests and selected interviews revealed that Mexican students employed general estimation processes similar to U.S.…

The opinions of 98 Australian educational experts concerning mathematics skills necessary for future numeracy were solicited. The qualitative comments were incorporated into three scenarios reflecting alternative visions for the future: a careful scenario, a futuristic scenario, and a process scenario. (24 references) (MDH)