Our Children's House students have many materials to aid in the refinement of the senses. By carrying each rectangular prism one at a time, the child is able to see and feel the changes in the size and weight of each one. The Brown Stair is a grading material that allows the child to develop their visual perception and muscle memory. After a child is familiar with the introductory lesson, they will begin to explore building the Brown Stair in other ways. mindsprout.me #mindsprout #oldtownspringtx