From Test-Scratch-Wiki
Sample projects are projects that come with an installation of Scratch. Sample projects are designed to teach new Scratchers how to program various things (such as scrolling or velocity).
There are twenty-four sample projects in Scratch 2.0 in the following six categories, with 4 projects in each: Animation, Games, Interactive Art, Music and Dance, Stories and Video Sensing.
A list of sample projects may be found here.
