[This paper is part of the Focused Collection on Curriculum Development: Theory into Design.] We discuss the theoretical underpinnings that informed the considerations and decisions that shaped the design of a curriculum unit entitled "Electromagnetic radiation--principles, applications, and decisions". This unit is part (45 h) of the…

This study addresses the development and evaluation of the Physics Problem-Solving Taxonomy (PPST), comprising five levels: retrieval, diagnosis, strategy, conceptual, and creative thinking. The taxonomy draws on Bloom's revised taxonomy in the cognitive domain, the Types of Knowledge Taxonomy, and the Problem-Solving Taxonomy in engineering. The…

A study of the effectiveness of teaching science to 2 classes of 15 and 20 ninth-graders, respectively, illustrates 5 aspects of educational evaluation: age factors in teachability, test unidimensionality, comparison of 2 classes of students regarding mean ability, objective difficulty of test items, and objective ability of individual students.…