In which stage do children begin to think logically about physical objects but struggle with abstract concepts?

The Concrete Operational Stage is characterized by children’s ability to think logically about concrete objects and events. This stage typically occurs between the ages of 7 and 11 years. During this period, children gain a better understanding of the concepts of conservation, reversibility, and categorization. They can manipulate concrete objects mentally and understand the logical relationships between them. However, they still face challenges with abstract concepts, reasoning, and hypothetical situations. This limitation is a significant aspect of their cognitive development, distinguishing this stage from both the earlier stages, which are more focused on sensory and symbolic play, and the later stage, which encompasses abstract and theoretical thinking.