Bloomby Unlock, Turn and Learn Shape Sorter Wooden Educational Toys On SALE! Regularly $28.99. Research conducted from Minds in Development Lab at University of Southern California: "Our results indicate that the most challenging aspect of both sorter games is the alignment of shape spaces rather than the actual placement of shapes themselves." "Impressively, 31% solved the alignment problem on the first level, i.e., without any prompts or cues regarding the key and its purpose." Sorting tray spins and needs to be aligned properly before child can precisely insert the correct shape The tray has 6 differently-shaped holes (triangular, circular, rectangle, pentagon, cross, and square) Unique and more advanced than standard shape sorters with a center key in the middle to add an additional complexity level to the sorter. We create research-based learning toys for your little one's progressive development.