W. L. Yarroch

Teachers perceptions of important and difficult science content

Fred N. Finley, James A. Stewart, J. Stewart, 1982 .

Science content as an important consideration in science education research

J. Stewart, F. Finley, W. L. Yarroch, 1982 .

Student Understanding of Chemical Equation Balancing.

W. L. Yarroch, 1985 .

The Problem of Terminology in the Study of Student Conceptions in Science.

I. O. Abimbola, W. L. Yarroch, 1988 .

The implications of content versus item validity on science tests

W. L. Yarroch, 1991 .