I made it through zoology class by making up songs such as this (tune is "Yankee Doodle"):
Sponges are Porifera,
Corals, jellies, hydra,
These have metagenesis and are Coelenterata.
Collar cells--Porifera; Sting---Colenterata.
Both lack mesoderm and are
The diploblastic phyla.
Twenty years later..and I can still sing it!
I think "Schoolhouse Rocks" was great, and my son learned a lot of information from it!