100 literacy activities for learning ABCs, storytelling, spelling, speech, and writing. Site also includes math, science, art, and holiday activities. (Purchase of materials not required to use activity instructions.)
Hundreds of books (fiction and non-fiction) available to read online, no downloading required. Read as a guest or create a login to save books to a virtual bookcase. Books are available in English and nineteen other languages. (Ages 3-13)
A treasure trove of ideas for play and learning, especially emphasizing art, creativity, and engaging the senses. Activities can be sorted by age (0-8) or theme (e.g. gross motor skills, fine motor, math, etc.)
A website of kids' projects (art, science, and more) aimed at "[raising] kids who are passionately curious and creative." Especially for adults "looking for ways to bond with... kids in our tech saturated world."