SASSY STEM BOX SETThe STEM box set sparks imaginative, open ended play while helping children develop skills related to science, technology, engineering, and math. STEM in its simplest form building, stacking, sorting, observation & experimenting. Includes a sushi sorter, 4 piece stacking pals, and a shape sorter. Explore with colors, shapes, textures, and more! 16 piece set designed for open ended STEM play allowing for baby to experiment and play in multiple ways,