Spectrum 
Common Core Language Arts and Math, Grade 3 [PDF ebook] 

Help third grade students master Common Core skills such as using prefixes and suffixes, determining the main idea of a text, understanding multiplication, and more with Common Core Language Arts and Math Spectrum workbooks. Take the mystery out of the Common Core with these unique and timely Spectrum 128-page workbooks. These information-packed resources for kindergarten through grade 6 provide an overview of the standards for each grade level along with practice activities for school success. Includes explicit references to the standards on each practice page that will let parents know that activities provide direct support for skills being taught at school.