Mama Jenn made an awesome (and FREE) primary and secondary color mixing chart, which you can find here. To go along with that, I created a tertiary color wheel, which I don't recall seeing on anyone's blog. There are 2 versions of it... first, as a color mixing activity, and then as a montessori-style matching activity (one page has labels at the bottom to be cut apart; the second page is the control).
Dropper activities made a comeback recently, with a posting here, but with a new twist of adding a grid for the kiddos to make their own designs, which was inspired by one of the Activity Mom's posts. I added to this download a grid of circles, so the kids can make their own designs. When cut in half, it is the size of the smaller tear-apart paper towels. I also added a couple of designs, in case the child needs a couple of ideas to get them inspired/started, similar to Little Hands, Big Work's example. (Sorry, I'm not very crafty, and I had trouble figuring out more patterns, other than a simple rectangle or star shape!)
You can download ALL of them HERE!
Hope you can use these! Lemme know what you think!