Take your color theory teaching beyond "Primary" and "Secondary" colors. Through these worksheets, students directly experience color behavior--the interaction of colors--and understand why colors behave as they do. This sounds complicated, but these worksheets make it quite easy.
The worksheets here are taken from the Color Theory Coloring Book. I have turned those lessons into worksheets that are printable and easy to use with students, without using the entire book. If you already bought my Color Theory Coloring Book, you have all the information that these worksheets contain. The difference is the formatting--worksheet form vs. book form.