Burrow, W.Listening and reading comprehension in special class educable mentally handicapped children at selected developmental levels. Unpublished doctoral dissertation, University of Connecticut, 1969.
2.
Cawley, J. F., Goodstein, H. A., Fitzmaurice, A. M., Lepore, A., Sedlak, R., & Althaus, V.Mathematics activities for teaching the handicapped. Storrs: University of Connecticut, 1974.
3.
Connolly, A. J.An instrument of measurement to appraise the arithmetic abilities of educable mentally retarded children ages thirteen through sixteen. Unpublished doctoral dissertation, Colorado State College, 1968.
4.
Cronbach, L. G.Essentials of psychological testing. New York: Harper & Row, 1970.
5.
Feldhusen, J., Check, J., & Klausmeier, H.Achievement in subtraction. The Elementary School Journal, 1961, 61, 322–327.
6.
Feldhusen, J., & Klausmeier, H.Achievement in counting and addition. The Elementary School Journal, 1959, 59, 388–393.
7.
Jones, R. L.Accountability in special education: Some problems. Exceptional Children, 1973, 39, 631–642.
8.
Nachtman, W. R.An instrument of measurement to appraise the quantitative abilities of the educable mentally retarded child. Unpublished doctoral dissertation, Colorado State College, 1962.
9.
Pritchett, E. M.An instrument of measurement to appraise the arithmetic abilities of educable mentally retarded children ages six through nine. Unpublished doctoral dissertation, Colorado State College, 1965.