A timed assessment and graded activity, allows professional staff, occupational therapist, school psychologist, physician (neurologist and pediatrician), and the like, to assess their patients in various areas. The assessment and graded activity can be used for motor skills, including fine-gross motor coordination and hand speed. The assessment and graded activity can also be used for assessing vision, including color, eye-hand coordination, crossing midline, left or right side neglect, and eye movements, crossing midline and left-right side neglect. Furthermore, the assessment and graded activity can be used for determining cognitive skills, including processing, concentration, attention deficit, problem solving, and ability to follow instructions. The 21-piece challenge as an assessment and graded activity designed to use a set of wooden dowels with its respective board. The 21 pieces of wood dowels contains five pieces of a first color, four pieces of three other colors, and two pieces of two other colors.