I love this concept too. Last year, and I might have gotten this from the list but if I did I don't remember who, in second grade , we took a line for a walk(for the covers of their sketchbook). They started with a starting dot on the left side of their paper. And put an ending dot on the other side. I had them choose a colored marker and timed how long they used each color (Maybe a minute or two). They could only go up, down, left and right. No diagonal! This is a way for you to contraol so they done get too may lines and scribble scrabble. For the little ones, maybe it would be better to start with a 9 x 12. I love the lesson though with all the elements together.