My 1st grade lesson to prepare students for the Greg Percy Songs in the Key of Art assembly was based on his song the Secondary Samba. The songs is very straight forward- about starting with the primary colors and which primaries are used to mix secondaries. Students at each table mixed primary colored tempera paint to create secondary colors. Next, they painted sections of a paper which they had folded in thirds with each color. This obviously didn't take a whole class period so I think the students had free draw time after they cleaned up. In the second class period, the students cut their colors apart and used their painted paper to make a collage on black paper. After the shapes were glued, students could use oil pastels and/or construction paper crayons to add details.