Schoolhouse Rocks, old school means new

I went to an "end of summer" celebration for a summer school program that my school hosts. I was amused by two original musical selections there:

One was about algebra and was sung to the tune of Y.M.C.A.:
"It's fun to graph using Y=mx+b"

The other was a science tune. The hook was:
"D to the N to the A"

I still wanted to hear a little "Conjunction Junction" but alas....