There is an increased awareness on the part of elementary school mathe- matics teachers of the importance of developing children's understanding of mathematical relationships and principles. Today's elementary teachers give more emphasis to experiences that facilitate the growth of particular concepts and less to activities involving rote memorization. Providing proper experiences depends in large measure upon the teacher's ability to determine concepts and skills that their pupils have already developed. During the primary and intermediate grades, teachers can usually find in- formation on areas of strength and weakness by reviewing a child's cumulative record. Kindergarten teachers, and first grade teachers where kindergarten experiences are not provided, do not usually have information available concerning the mathematical competencies of their pupils.