What kinds of didactic materials did Maria Montessori create for young children?

Maria Montessori developed specialized "didactic apparatus" designed to foster self-directed learning and sensory engagement in preschool children. These materials were specifically created to encourage individual initiative and allow children to learn through purposeful, hands-on activity.12

Key examples of these didactic materials include:

• Premathematics tools: Beads arranged in graduated-number units to help children grasp numerical concepts.1
• Reading aids: Small wooden slabs designed to train the eye in the left-to-right movements necessary for reading.1
• Motor skill trainers: Graduated series of cylinders used for small-muscle training.1

These materials were intended to be sensory-rich and self-correcting, allowing children to work spontaneously and independently. By providing these concrete tools, Montessori aimed to support a child's natural "periods of sensitivity," during which they are best prepared to acquire specific knowledge. In this system, the teacher demonstrates the use of the apparatus but remains in the background, allowing the child to handle the materials alone to facilitate self-education.12