Preschool gravel activity case

Quick answer：

A 'preschool gravel activity case' typically refers to an educational or recreational activity designed for children in the preschool age group (usually 3-5 years old) that involves the use of gravel. Such activities are often used to promote fine motor skills, sensory exploration, and creativity. They may include tasks like sorting gravel by size, shape, or color, creating art with gravel, or using gravel for counting and measurement exercises.