This issue contains abstracts and critical comments for ten mathematics education journal articles, plus an editorial on teacher education needs by Thomas J. Cooney. Two articles focus on problem solving; the remainder concern instruction about and with computers, geometric perceptions, preservice teachers' conceptions of volume, attitudes toward mathematics, time on task, mastery learning and student teams, teachers' conceptions and practices, and small-group interaction. References to mathematics education research reported in "Resources in Education" (RIE) and "Current Index to Journals in Education" (CIJE) from October through December 1984 are also included. (MNS)