This inquiry presents two fine-grained case studies of students demonstrating different levels of cognitive functioning in relation to bilateral symmetry and reflection. The two students were asked to solve four sets of tasks and articulate their reasoning in task-based interviews. The first participant, Brittany, focused essentially on three…

This article describes a process for increasing the quality of students' thinking through alternating from a quiet intuitive state to rational logical processing. The article provides specific teaching suggestions using guided imagery for students in grades K-2, grades 3-4, and grades 5 through college. (DB)

This paper presents a historical overview of visualization as a human problem-solving tool. Visualization strategies, such as mental imagery, pervade historical accounts of scientific discovery and invention. A selected number of historical examples are presented and discussed on a wide range of topics such as physics, aviation, and the science of…