Art Lesson for Kids: Canvas Colorfield Art Journals

So, I’ve started my after-school art class at the elementary school where I teach. At first, I was nervously checking the office for completed registration forms and worried I wouldn’t have enough students BUT lo, and behold, I reached my limit of 20 students and went past it, ending up with 24 students in 2nd-4th grade!
In our first class, students created their own art journals using the “colorfield” technique of abstract painting and canvas. I found this lesson on Dick Blick’s website. Here is the link: http://www.dickblick.com/lesson-plans/color-field-sketchbook/
The finished art journals should end up looking something like this:

The kids LOVED making their journals but it was a little messy. I spent a good two hours after they left scrubbing the paint from the tables, stools, and floor. So, just wanted to CAUTION you if you plan on doing this with kids (or even if you do it for yourself) you will need LOTS of old newspaper, or trash bags, and paper towels. 
So, how to make these lovely journals you ask? All you need are various colors of acrylic paints, unprimed canvas, plastic cups, an empty spray bottle and some paint brushes. 
* For each color you want to use, squirt about tablespoon of paint into a disposable cup and then put about a tablespoon of water in the cup (less water for darker colors) and mix with a paintbrush until smooth. Choose 3 or 4 colors you want to use (remember that mixing more than 3 colors together in one place will create a brownish blah color) 
* Fill the spray bottle with water and spray sections of your canvas (this will help create the swirly patterns when the colors mix together with the water and the dry canvas). 
* Pour onto the canvas! 
Experiment with different colors and different “pouring techniques.” Try pouring from far away, to create a splash pattern. Use a paintbrush to flick a spatter pattern, or pour colors, then tip the canvas up, so that the colors create a “raindrop” or “drip” pattern. 
* Be careful of using too much water, or pouring too much, because it will pool on the canvas and mix with all the other colors to create an unpleasant brownish color. 
I spent way to much time on mine…I used a lot of white paint, because I found that it brightened the colors and kept it from becoming to dark. Here’s how mine turned out….I am sure if I was to make another one, it would be completely different. 
I think next time, I want to try a more simple approach; using only 2 or 3 colors and not worrying so much if there was blank canvas. 
These are just a few of the outcomes from my students..I love how unique and colorful they all turned out. I can see their individual personalities in the colors they used and how they mixed them: 

Binding these guys is a whollllle other story!