Let’s Play Music is a phenomenal resource!
http://www.letsplaykidsmusic.com/free-kids-songs-directory/

The site is developed by Sara Mullett, who has 15 years of experience teaching kid’s music classes. There are over 150 songs on the site, and for each, she includes lyrics, sheet music, videos of her playing the tune on a xylophone, circle time ideas including puppets, movement games, etc.

You can also follow her page on Facebook at www.facebook.com/personalisedlullaby, where she shares her own posts and also puts links to other helpful resources on the web.

For my other favorite resources for kids songs, look here, and for links to lyrics for, and videos of, my favorite kids songs, look here.