Tints & Color Mixing with Kindergarten

Kindergarten did the Georgia O'Keeffe lesson I've shared on here in years past.  They start with a dot in the center of the page, and draw six wavey lines coming from the dot.  They then pick a plate of paint that I've already pre-dispensed(I try to have a variety of color combos).  Everyone gets white to create tints.  I showed them how to mix their colors on the paper, and to paint from the center point out to create a "flow".  At the end of class we discussed what tints & shades were, they were given a color & had to tell me what two colors made it, and then just other random color knowledge.