Discussed are three recent psychological experiments that demonstrate (1) how students can be instructed to falsify on two tasks that model scientific reasoning and (2) how the possibility of error in the data affects their attempts to falsify. Games were used in the treatments. (MNS)

Reports research supporting the hypothesis that concrete-operational college students playing the game Master Mind with an observer where there is verbal interaction designed to stimulate thinking about the problem-solving situation will show greater cognitive growth than subjects not playing the game. Implications for science instruction are…

The author reviews pertinent studies conducted between 1917 and 1973 in which the introspective-retrospective technique of data gathering was employed in determining the mental processes of children in arithmetical reasoning and the difficulties encountered. (MN)

Students (n=61) in an experimental course stressing active student involvement and the use of a computer algebra system scored higher than students (n=76) in a traditional college algebra course on final measures of inductive reasoning, visualization, and problem solving while maintaining equivalent manipulation and computation skills. (Author/MLB)