Its easy, first go to paint, creat your image. Then save it to your hardrive or desktop.
Then open up PP and create the slide that is all blank. Go to "Insert", ''Picture'', ''From File'', then select the file you saved it to. The image you created should come up on PP.
Repeat process untill you got enough slides but remember to create the blank slide.
Then when you have a whole bunch of slides of different things, go to "Slide Show" then click on "Slide Transition" The go to advanced slides and set the speed as 00:00 then apply to all the slides.
This should create an animation.