Bloomby Spin and Fit Turtle Shape Sorter Wooden Educational Toys On SALE! Regularly $37.99. 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." "They were enthralled by the animal shape and additional wheel rolling feature of this toy..." Sorting tray within shell spins on the turtle's back and needs to be aligned properly before child can accurately insert the correct shape The shell has 6 differently-shaped holes (triangular, circular, rectangle, pentagon, cross, and square) Unique and more advanced than standard shape sorters. We create research-based learning toys for your little one's progressive development.