INQUIRY What Needs to Develop in the Development of Inquiry Skills? Beyond Control of Variables: What Needs to Develop to Achieve Skilled Scientific Thinking? Direct Instruction vs. Discovery: The Long View Is Developing Scientific Thinking All Aobut Learning to Control Variables? Developing Reason Reasoning About Multiple Variables: Control of Variables is Not the Only Challenge Jumping to Conclusions: Can people be counted on to make sound judgements? ARGUMENT Arguing on the Computer: A Microgenetic Study of Developing Argument Skills in a Computer-Supported Environment Coordinating Own and Other Perspectives in Argument LEARNING Do Children and Adults Learn Differently? What's So Good About Problem-Based Learning? METACOGNITION Metacognitive Development ADOLESCENCE Do Cognitive Changes Accompany Developments in the Adolescent Brain? EDUCATION & VALUES Epistemological Understanding and the Development of Intellectual Values How to Produce a High-Achieving Child Is Direct Instruction an Answer to the Right Question?