Process Art : Painting with Yarn and Tempera Paint. A great project for your students with special learning needs and sensory issues. Work on fine motor skills and build independence. Get all the directions at: http://buggyandbuddy.com/process-art-for-preschoolers-painting-with-yarn/
This is a fun way to extend the Art curriculum outdoors. Make containers of branches and stones available. The children can then use them to create a surface for painting. Let the children paint directly onto the snow with brushes. Encourage children to clean up by returning the sticks/stones and flipping the snow over with a shovel, then smoothing it over.