I came across this page last week as I was looking for the lyrics to a song
(I Hear Singing by Irving Berlin, it turns out, from Call Me Madam)

Had a lot of fun with it, then got to wondering what it was doing on a NIEHS site. Turns out there's a lot more on the parent page http://www.niehs.nih.gov/kids that might be fun for schools and, indeed, for anyone with young children.

I still don't know why it's on the NIEHS site. "Environmental Health Sciences" doesn't seem quite the appropriate venue, however worthy kids' education and health may be in their own right.