Science, Technology, Engineering and Math.
Science: Chromotography - figuring out how when some colours meet and mix, they combine to make a new colour.
Technology: The funnel this kit came with was a bit small...This required some problem solving. I used a homemade funnel made of paper, and my son used a skewer to help push the sand through the funnel. Also the sand art wand was next to useless so we needed to create a work around for that. Straws, toothpicks, careful shaking, and moving the funnel to direct the flow were our options.
Engineering: Each sand art jar was shaped differently, my son chose the bottle he did because it seemed to him the best bottle from which to learn how to layer sand.
Math: The sand particles shift and settle. This meant we needed to add more sand than we originally thought. It took careful shaking to get the sand to settle without messing up the design we so carefully created.
Have you tried Sand Art as a STEM activity? Though I do suppose, that it includes the A as well eh? The "A" being for art... aren't they interesting once they are complete? Sand art also shows off our individual expression! :)