KWL table. A KWL table, or KWL chart, is a graphical organizer designed to help in learning. The letters KWL are an acronym, for what students, in the course of a lesson, already know, want to know, and ultimately learn. It is a part of the constructivist teaching method where students move away from what are considered traditional methods of teaching and learning.
(rÄ­-dÅ­kâ²shÉn) n. 1. The act or process of reducing. 2. The result of reducing: a reduction in absenteeism. 3. The amount by which something is lessened or diminished: a reduction of 12 percent in violent crime. 4. A sauce that has been thickened or concentrated by boiling.
Medical Definition of ventilation. 1  1: the act or process of ventilating. 2  2: the circulation and exchange of gases in the lungs or gills that is basic to respiration.