Actually we looked at a few Julian Beever sidewalk art first. ;)
Just plain awesomeness. I love his stuff! I also found a few fast forward "making of..." Sidewalk art videos that were so fun to watch! Like this one:
https://m.youtube.com/watch?v=3SNYtd0Ayt0
Once outside, they learned how to make a compass with a piece of string, chalk and a pencil, and we began filling in our mosaic with color. A bit different from Julian Beever but still turned out pretty awesome!!!
That afternoon, they had done such a fabulous job that I was running low on chalk...Soooo... My littles used chalk on paper instead. Also because keeping them contained as much as possible with art supplies is always a good idea! ;)