Summary Activities with dyes, from plants and synthetic. Science content Chemistry: Indigenous People’s Materials/Separation methods (1, 6) Chemistry: Physical Changes, Solutions, Mixtures and Separating (2, 4, 5, 6) Activities in this lesson Extracting dyes from plants Chromatography with coloured marker pens Materials materials in the activities Procedure Extract dyes from plants, and learn about Indigenous separation methods.Separate dyes in marker pens (synthetic dyes), and learn how a pack of marker pens are made. Grades taught Gr 6 Gr 7