Below are two databases that offer materials of special interest to children:
Kids InfoBits is the perfect educational product for today's young learners. It's a content-rich, authoritative, easy-to-use resource featuring age-appropriate content covering a broad range of educational topics.
Britannica Library Children:
You can choose from a variety of content types, including articles, images, videos, dictionary, magazines, Web's Best Sites, Primary Sources & Ebooks, and Year in Review.