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Kaplan, Jerome D."Mathematical Objectives," unpublished. New York, N. Y. : Institute for Developmental Studies, School of Education, New York University, 1966.
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Neill, A.S.Summerhill: A Radical Approach to Child Rearing. New York, N. Y.: Hart Publishing Company, 1960.
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Paschal, Bill J. "A Concerned Teacher Makes the Difference," The Arithmetic Teacher, XIII (March 1966), 203 -205.
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Ausubel, David P.The Psychology of Meaningful Verbal Learning. New York, N. Y.: Grune & Stratton, Inc., 1963.
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Berkeley, Edmund C.A Guide to Mathematics for the Intelligent Non-mathematician. New York, N. Y.: Simon & Schuster, Inc., 1966.
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Piaget, Jean.The Child's Conception of Number. New York, N. Y.: W.W. Norton & Company, Inc., 1965.
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Reed, Mary K. "Vocabulary Load of Certain State-Adopted Mathematics Textbooks, Grades 1 -3," Doctoral dissertation, University of Southern California , Abstract No. 3706, January 1966.
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Stern, Catherine.Children Discover Arithmetic. New York, N. Y.: Harper & Row, Inc., 1949.
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Westcott, Alvin, and James Smith.Creative Teaching of Mathematics in the Elementary School . Boston, Mass.: Allyn and Bacon, Inc., 1967.
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May , Lola J.Mathematics Games for All Grades. Darien, Conn. : Teachers Publishing Corporation, 1967.
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Nuffield Mathematics Project. I Do, and I Understand: Pictorial Representations and other teacher guides. New York, N.Y.: John Wiley & Sons, Inc., 1967.
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Russell, Robert W.A Program of Special Classes for Children with Learning Disabilities . New Jersey Association for Brain Injured Children , 1964 .
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Wagner, Guy, Max Hosier, and Laura Gilloley.Arithmetic Games and Activities. Darien, Conn.: Teachers Publishing Corporation, 1968.