Sequel to learn-to-read fave offers even more -- for a fee.

Safer sequel to classic network spotlights music.

Share squirrel observations as a citizen scientist.

Mostly safe spot for teens to share their love of books.

Online community encourages citizen science; watch privacy.

Download gives good background on coding, so-so instruction.

Useful tool for managing chores has lots of shopping.

Tidy virtual space for storing and sharing tidbits of info.

Student search engine gives kids credible, relevant results.

Sweet site lets kids write and illustrate original stories.

Cool history project empowers teens to connect and share.

Simple multiplication site is dull, ad heavy.