An achievable challenge is a task or goal that you can realistically accomplish with effort and determination. It is something that pushes you to do better and improve, but is still within your abilities. Full definition
When learners have opportunities to participate in learning challenges at their individualized achievable challenge level, their brains invest more effort to the task and are more responsive to feedback. (edutopia.org)
In each of these extremes, you would feel either frustrated or bored, depending on your level of achievable challenge. (edutopia.org)
Using one of the examples of differentiated planning for achievable challenge in this chapter, plan an instructional unit that meets standards for the grade level you teach. (ascd.org)