Galaxies – StarChild – a website for kids here.
How many galaxies are there? Click here to get even a tiny idea.
Ask an Astronomer for Kids – Galaxies – Click here.
Kidpower – Galaxies – here.
Learn about galaxies and other space topics - Click here.
Ask an Astronomer for kids – Black Holes – Click here.
Black Hole Rescue – a game from NASA here.
Here's a galaxy art project from NASA here.