9 Downloadable e-books in the field of subjects taught in kindergarten through 12th grade (K-12), namely, math, reading, writing, science and social studies; Downloadable educational computer applications featuring instruction in the field of subjects taught in kindergarten through 12th grade (K-12), namely, math, reading, writing, science and social studies; Downloadable children's educational mobile applications featuring instruction in the field of subjects taught in kindergarten through 12th grade (K-12), namely, math, reading, writing, science and social studies; Downloadable children's educational tablet applications featuring instruction in the field of subjects taught in kindergarten through 12th grade (K-12), namely, math, reading, writing, science and social studies