By the end of this project students have created an animated biome. I have used this with third grade students for two years with great results each time. Tutorials and handouts included.
I "remixed" Karen Randall's rubric and uploaded the project criteria (have a goal, tell a story, be original, show care/effort, demonstrate your coding skills).
Assessment, Handout
Elementary School
Computer Science, Engineering, Language Arts, Mathematics, Music, Science, Social Studies, Teacher Education, Technology, Visual Arts, Other
Documents with sample code for lots of Scratch implementations of APCS topics. I just finished using these with my APCS class (they have no prior programming experience).