Complete Classroom Library includes one each of the following: Math Library Science Library Social Studies Library Content Area Classroom Libraries include: 1 display box containing 10 6-packs (60 little books) 1 Teacher Resource Portfolio 1 Assessment Book (where available) Big Book Collection includes the Classroom Library titles 10 Big Books for Science 10 Big Books for Social Studies 10 Big Books for Math Classroom Library Add-on Packs include 1 copy of each title from the social studies, science, and math libraries.Add-On Packs include 1 copy of each title.