Carson Dellosa Education Spectrum Workbook

Spectrum is a well-known series of educational workbooks designed for children from preschool through eighth grade. These books cover various subjects including math, language arts, and science, and are widely used by both teachers and parents for supplemental learning and test preparation.

The brand was originally published by the American Education Publishing company, based in the United States. Today, the brand is owned by Carson Dellosa Education (formerly Carson-Dellosa Publishing), a leading provider of educational solutions for the classroom and home. Carson Dellosa Education is headquartered in Greensboro, North Carolina, and continues to produce most of its materials within the United States, maintaining a strong presence in the North American educational market.