The 4 apps in this collection show pictures and diagrams related to mixing 2 colors of paint in different ratios. See the Related Resources section below for directions and other information about the apps. Created for the Visual Access to Mathematics (VAM) professional learning program supported by the National Science Foundation under Grant No. DRL-1503057. For more information about VAM visit https://go.edc.org/vam . Any opinions, findings, and conclusions or recommendations expressed are those of the author and do not necessarily reflect the views of the National Science Foundation.