Basically... there is a one page copy of the song (for the projector or overhead)
...large print posters for group singing...
...a student booklet with the song illustrated to help with memorization.
The booklet also provides math problems for the students to complete.
It started out as a fun, holiday math activity that snowballed into a ton of fun.
Beware ... the holidays end, the snow melts and the kids are still singing the song :)