To test the theory of mental calibration for mental addition it was hypothesized that the mean reaction time for problems in homogeneous sets will be faster than for problems in heterogeneous sets and that the reaction time was inversely related to ability and development (grade level) and independent of gender. Three sets of 40 addition problems…

Whole-class peer tutoring programs have been found by some to be an effective way of providing students with a one-to-one instructional setting. This document reports on a study in which a peer tutoring program on mathematics fact acquisition was assessed using a second grade classroom consisting of 21 learners who possessed below average…