Like so many others on here, I really liked the idea of this lesson, too. I also have included a slightly modified version. I am using it for high level gr. 6 kids so the cow birth had to go. The skeleton cleaners as well due to it's extreme rottenness. I replaced them with Mike at a diaper laundromat and window cleaning. The clips are included and should open from the ppt presentation (.flv, so gomplayer set as window's default for that type of file should work fine).
note: can't upload .flv type files so had to put them into .rar's