Another idea found on Pinterest........ Loretta Grayson is the artist who inspired this lesson, I love her colorful art. See lots here and more info. about her here.
The original on Pinterest were small square paintings that looked like they were done on canvas w/ acrylics, but after reading Loretta's blog - she uses a wonderful combination of pastels and paint, etc. Because of resources, I decided instead to do the project as a paper mosaic. It took 2 sessions, and I think they turned out great.
1. cover 8x8" tagboard w/ mosaic paper squares
2. draw circle on 4x4" paper, cover w/ mosaic squares on opposite side, then cut out circle.
3. draw black tree branches and glue onto circle, then glue onto background.
These were done by 5th/6th graders:)