title: Early science instruction: addressing fundamental issues.
authors.affiliation: Department of Psychology, Carnegie Mellon University, Pittsburgh, PA 15213, USA. klahr@cmu.edu
authors.forename: David
authors.initials: D
authors.lastname: Klahr
mesh_terms: D002648:Child; D003071:Cognition; D006801:Humans; D012586:Science / Q000193:education*; D013663:Teaching / Q000379:methods*; D013850:Thinking; D013997:Time Factors