OK I admit it I am not a major fan. But I am convince-able. I do recognize that many of my students do not think as I do (lol) and that they need the hands on manipulatives to anchor many concepts. I am have used cubes on many occassions to illustrate 3-d concepts. It is only appropriate to give this a fair shot. I am pleased to see the online option, as I was having a problem scraping together a classroom set of tiles.