According to Piaget, during which developmental stage do children understand…

Concept

Piaget described cognitive development as a progression through qualitatively different stages. Each stage is associated with characteristic ways of reasoning, rather than merely with the amount of knowledge a child has.

The concrete operational stage, usually placed at about 7–11 years, introduces logical operations that work most effectively with tangible objects and directly observable situations.

Application

The prompt links number understanding to the use of concrete objects. This requires logical handling of visible quantities, such as arranging, grouping, classifying, and conserving number, which characterizes the concrete operational stage.

Contrast

• The preoperational stage emphasizes symbolic and intuitive thought before stable concrete logical operations.

• The sensorimotor stage centers on learning through perception and physical action during infancy.

• The formal operational stage extends reasoning to abstract and hypothetical ideas without requiring concrete objects.

Result

Therefore, the developmental stage described is the concrete operational stage.