• Journal for Research in Mathematics Education (1975) Vol. 6, No. 3

    ISSN 0021-8251 JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION Interaction of Spatial VIsualization and General Reasoning Abilities with Instructional Treatment In Quadratic Inequalities: A Follow-up Study Leland F. Webb and L. Ray Carry Interaction of Spatial VIsualization and General Reasoning Abilities with Instructio