In two experiments, participants made inferences from weather maps, before and after they received instruction about relevant meteorological principles. Different versions of the maps showed either task-relevant information alone, or both task-relevant and task-irrelevant information. Participants improved on the inference task after instruction,…

The relationship between argumentation and informal reasoning is discussed, followed by a consideration of instructional factors that influence argumentation performance. An account of one expert student reasoner is provided. Instruction in argumentation is reviewed, and suggestions are made for argumentation based on classroom experience. (SLD)

Sixth graders (n=192) participated in a study that compared the effects on behavior and achievement of cooperative learning with group members trained to facilitate each other's learning and cooperative learning in which members did not receive such training. Training resulted in positive effects on achievement and behavior. (SLD)