Drawing a nesting doll design
This digital art lesson has both a drawing and animation component. The nesting doll design (see this handout) works perfectly for learning about size, duplication, and overlapping while only drawing one doll.
As I was playing with the Do Ink drawing app to draw my nesting doll design I decided that the trickiest part of the design is getting a symmetrical nesting doll shape so I made a template for the students to start with.
It's easier to use the original .doink file to import into the app.