Building algebraic thinking with progressive patternsRobert E. Willcutt · First published 1995Open the Tome
Spatial Problem Solving with Paper Folding and CuttingPatricia S. Davidson, Robert E. Willcutt · First published 1984Open the Tome
Spatial problem solving with Cuisenaire rodsPatricia S. Davidson, Robert E. Willcutt · First published 1983Open the Tome
Mathematics methods for junior high school teachersPaige, Donald D. Willcutt, Robert E., ; Wagenblast, Jerry M., · First published 1968Open the Tome
Mathematics Methods for Junior High School Teachers Volume TwelveDonald D.; Willcutt, Robert E.; Wagenblast, Jerry M. Paige · First published 1968Open the Tome
