Described is an investigation into how the use of LOGO programing language affects children's basic knowledge of an angle. Findings indicate that children make erroneous adjustments to their conceptual knowledge of angle to accommodate the results of acquired procedural interaction with the computer. (Author/CW)

Investigated are the developments of pupils' use and understanding of algebraic ideas within a LOGO programing context and a non-computational context. The research consists of a 3-year longitudinal case study of 4 pairs of pupils aged 11-16. LOGO experience enhanced the understanding of algebraic ideas. (Author/YP)

Describes study that investigated the effect of learning Logo on middle school students' understanding of specific mathematical concepts and on their level of cognitive development. Treatments for the experimental and control groups are outlined, hypotheses tested are explained, and pretests and posttests are described. (22 references) (Author/LRW)