Another fun song is Frère Jacques. Here is a video for the melody and a copy of the lyrics for you. It is a fun song and sung to the tune of the English version "Are you sleeping (Brother John)?". It is also a melody that is used alot to teach other French vocabulary. Try singing this one this week, with or without your kids!
Here's the lyrics:
Frère Jacques, Frère Jacques,
Sonnez les matines! Sonnez les matines!
Din, dan, don. Din, dan, don.
Brother Jacob, Brother Jacob,
Are you sleeping? Are you sleeping?
Morning bells are ringing! Mornings bells are ringing!
Ding, dang, dong. Ding, dang, dong.