Description
This 19-page practical guide helps educators lead calculation-error investigations with children ages 6–12. Children practice spotting, explaining, and correcting errors using estimation and checking strategies, including place-value alignment, regrouping, operation choice, fact slips, and inverse operations. Use the prompts to guide individual or partner work, adapt instruction, and identify what may need reteaching. It is a useful resource for a math lesson, targeted practice, or reviewing a child's calculation strategies.