I introduced my third graders to the many works and many giant installations of Sol Lewitt. What is so fantastic is if you have access to the internet you can show the students loads of time-lapse videos of the wall paintings being constructed! (My link goes to the Mass MOCA website but google it and you will find many more.)
The colors, lines, shapes, overlapping effects are all so wonderful for the students to make connections to and VTS exercises worked great with some of his wall painting examples.
The project I am about to install began with each student drawing a line that touched two side of the paper, draw a parallel one to it and then fill it in with red crayon.
The next class we used tempera cakes (red, blue, green, yellow) to paint concentric and contour lines.