Green Toys Stack & Sort Train SetAll aboard! The Green Toys Stack & Sort Train is a one stop shop for practicing motor skills, color matching, counting, sorting, and categorization. The 12 piece set includes a train engine, a shape sorting car with removable roof, a cargo car, four shapes (circle, square, triangle, and star) featuring a puppy, kitten, mouse, and bunny, and four numbered, graduated stacking pieces that nest easily in the cargo car, with designs that match their