Epic is the #1 children's digital library for kids 12 and under, offering access to over 40,000 high-quality books for kids, learning videos, reading quizzes and more. ... With Epic, kids can explore their interests in a fun, safe, kid-friendly environment with no ads or in-app purchases

Funbrain is the #1 site for online educational games for kids of all ages. (math, grammar, science, spelling, history)

PBS KIDS is committed to making a positive impact on the lives of children through curriculum-based entertainment with positive role models and content designed to nurture a child's total well-being. 

On the Starfall website, children have fun while learning in an environment of collaboration, wonderment, and play.