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In some cases, completion of low-stakes badged activities can be 鈥渟tacked鈥� into a full microcredential that also generates a badge. Higher education uses the concept of stackability frequently – for example, in some majors, a student completes introductory courses that focus on basic concepts, then stacks mid-level courses focused on skills development, and then stacks a final level of courses where they demonstrate mastery.