Solving word problems involving 'Time' is an important skill but poor mastery of the skill among elementary students has often been reported in the literature. In addition, the available diagnostic tools in the literature might be less efficient for identifying the various errors made by many students in solving word problems. Thus, an online…

This paper presents a framework for conceptualizing the different ways in which instructions in experimental tasks may be misunderstood. Five possible types of misunderstandings are identified and discussed: (1) misunderstanding of a particular term in the instructions; (2) misinterpretation of a task because the instructions are difficult to…

The concepts of cognitive development and objectivity are explored preparatory to a discussion of a suitable theory of development to be used as the foundation for developmentally-based standardized tests. It is hypothesized that Piagetian theory is the most appropriate basis for such tests and two possible approaches for constructing…