Each "worksheet" is actually a Google Slide presentation which collectively (within 9 presentations) covers all 9 of the principles of design (emphasis, unity, movement, proportion, scale, balance, repetition, rhythm, and variety). Students are presented with both informational and interactive slides throughout the slideshow. So they learn about a specific concept, then are asked to complete interactive activities (drag and drop and written response) to show their understanding. Once they've completed the "worksheet" they can either turn their work into you via Google Classroom, or if you aren't using that platform, they can "share" the document back to you via a Google Drive share link (only caveat is that they have to have access to Google Drive). There's complete details for both options included in the resource. 

As mentioned, the elements are spread out into 14 presentations (detailed below). 

Emphasis (4 activity slides / 12 total slides) Unity (4 activity slides / 12 total slides) Movement (4 activity slides / 14 total slides) Proportion (3 activity slides / 11 total slides) Scale (4 activity slides / 14 total slides) Balance (4 activity slides / 14 total slides) Repetition (5 activity slides / 12 total slides) Rhythm (8 activity slides / 21 total slides) Variety (4 activity slides / 13 total slides)

If you'd rather not grant TPT access to your drive, you can purchase through my website shop. If you do it that way, you'll get a few PDF documents, one of which (TeacherDirections.pdf) contains a list of links to all of the presentations. When you click on one of the presentation links, it will prompt you to make a copy to your Google Drive. You'll need to do that in order to gain access to the resource.