At which stage do children typically develop the ability to count from 20 onward?

The ability to count from 20 onward is typically developed during the elementary age stage. At this point in their education, children generally have developed a more solid understanding of number concepts and are often able to engage in more complex counting tasks. They start to incorporate higher numbers into their counting repertoire, which is facilitated by their exposure to more structured learning environments, such as school. Children in elementary age also begin to understand the relationships between numbers, which helps them not only to count beyond 20 but also to engage with mathematical concepts that extend further into addition, subtraction, and basic arithmetic.

In contrast, early childhood and preschool age are stages where foundational number concepts are introduced, such as recognizing numbers, counting to 10, and understanding one-to-one correspondence. While some children may begin to count past 20 in preschool settings, it is not until they reach elementary school that counting confidently from 20 and beyond becomes typical for most children. Adulthood is not relevant to this question as it refers to a period where counting is well-established, not a developmental stage for acquiring counting skills.