Many studies have stressed students' lack of understanding of experiments in laboratories. Some researchers suggest that if students design all or parts of entire experiment, as part of an inquiry-based approach, it would overcome certain difficulties. It requires that a procedure be written for experimental design. The aim of this paper is to…

Describes a positive method of studying children which gives insight into the differences between "privileged" and "underprivileged", and makes possible analysis of the development of a logical concept (number). Preschool children were observed as they interacted in a controlled group situation. (ED)