• Journal for Research in Mathematics Education (1979) Vol. 10, No. 5

    ISSN 0021-8251 JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION Variables Affecting Word Problem Difficulty in Elementary School Mathematics Janet H. Caldwell and Gerald A. Goldin The Interaction of Learner Aptitude With Types of Questions Accompanying a Written Lesson on Logical Implications Judith Threadgill The Interac