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 carbon dioxide. : a heavy colorless gas CO2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages.