wikiHow
Wiki How: How to Mix Colors Properly
A quick review of the color wheel and some tips on how to mix colors with paint.
Other
Mixing Mouse Tracks
This art idea is based off the children's book "Mouse Paint" by Ellen Stoll Walsh. A fun way to introduce young learners to the primary and secondary colors through simple mixing exercises.
ClassFlow
Class Flow: Color Mixing
[Free Registration/Login Required] This is an elementary primer to mixing colors in art and is a great resource for beginning artists with activity pages for kids to demonstrate their understanding of primary and secondary colors.
Kinder Art
Kinder Art: Sweet Stuff
Art students will learn about visual balance, visual texture, and textural paint by following the example of Wayne Thiebaud, famous for his dreamy 1960s paintings of cakes.
Children's Discovery Museum
Children's Discovery Museum of San Jose: Color Blending Top
Put a new spin on blending colors by creating your own spinning top. Mix colors through motion and make this optical illusion spring to life.