@Work{OL15142171W, title: {Holt school mathematics [grade 3]}, author: {Eugene Nichols}, first_publish_year: {1978} } @Work{OL2015990W, title: {Codes}, author: {Nigel Nelson}, first_publish_year: {1994} } @Work{OL8441104W, title: {Spectrum Math, Grade 3 (Spectrum Math)}, author: {School Specialty Publishing}, first_publish_year: {2006} } @Work{OL15604801W, title: {Story problems grades 3-4}, author: {Susan Loughrin}, first_publish_year: {1996} } @Work{OL1670571W, title: {Mathematical thinking at grade 3}, author: {Susan J. Russell and Susan Jo Russell}, first_publish_year: {1998} } @Author{OL2931689A, name: {Susan J. Russell}, } @Author{OL6950502A, name: {Susan Jo Russell}, }