TY - BOOK AU - Glennon,Vincent Joseph AU - Hunnicutt,Clarence William ED - Association for Supervision and Curriculum Development TI - What does research say about arithmetic U1 - 372.72 23 PY - 1958///. CY - Washington: PB - Association for Supervision and Curriculum Development, KW - Arithmetic KW - Study and teaching (Elementary) N1 - Includes bibliography p. 61-74 and index ER -