This is a Montessori material called the "Snake-Shaped Peg with Sliding Disc." It consists of a wooden base, a metal snake-shaped rod, and a green circular sliding disc that can move along the rod.

Features and Uses:

1. Fine Motor Skill Development: By sliding the circular disc, children can practice hand-eye coordination and refine their fine motor skills.

2. Exploration and Perception: Encourages children to explore how the disc operates and understand the changes in its spatial position.

3. Focus and Concentration: The repetitive action of sliding the disc helps enhance children's attention span and ability to concentrate.

4. Sensory Stimulation: The green disc offers visual and tactile sensory experiences for children.

This material is suitable for infants aged 6–18 months. It aligns with the Montessori education principle of independent exploration, providing opportunities for early development of motor and sensory skills.