[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…

Explores the perceived complexity and urgency defined by school principals for planning processes and plans for policy issues that form the Israeli educational agenda. Advances proposition that the higher the urgency attributed to a specific issue, the lower the probability that educators will adequately address its complexity and create plans…