The effectiveness of different concrete and pictorial models on students' understanding of the part-whole construct for fractions was investigated. Using interview data from fourth and fifth grade students from three different districts that adopted the "Mathematics Trailblazers" series, authors identified strengths and limitations of models used.…

This study identified differences in elementary school students' performance of arithmetic tasks using paper and pencil and computer-assisted instruction. Many were found to perform more poorly using the computer, while others showed the opposite tendency. These findings challenge the validity of decisions made by the computer-based management…

An investigation of how secondary students coped when taught binary arithmetic through a computer assisted instruction program used four treatment groups: learner control, learner control with advice; random program control, and adaptive program control. The random group performed less well, but no differences were found between learner and…