At which stage of Piaget's cognitive development do children begin to think logically about concrete events but still struggle with abstract concepts?

Children begin to think logically about concrete events during Piaget's Concrete Operational Stage, which typically occurs between the ages of 7 and 11. In this stage, kids can perform operations like addition and subtraction and understand the concept of conservation, meaning they realize that quantity doesn't change even if the shape does. However, they still find it challenging to think about abstract ideas or hypothetical situations. For example, if you ask a child in this stage to think about what it would be like if there were no gravity, they might struggle to understand that concept because it’s not something they can see or touch. Overall, this stage marks an important step in a child's ability to think more logically about the world around them.