The first idea concerns a board game similar to tic-tac-toe in which the strategy involves the knowledge of the factorization of quadratic polynomials. The second game uses the calculation of the surface areas of solid figures applying the specific examples of cigar boxes and cylindrical tin cans. (JJK)

The nine chapters of this theme issue show how, in diverse cultural settings, cooperative learning methods enhance learning and reduce frictions among learners. A second goal of these papers is to indicate how cooperative learning fits or doesn't fit in several societies. (SLD)

Current thinking of researchers from different disciplines about interaction among students in educational settings and the potential of peer interaction for learning and cognitive development is discussed. Topics of the eight papers presented include: potential outcomes of peer interaction, its nature, peer learning settings, and factors shaping…