Children with Down Syndrome (DS) may suffer from an intellectual disability as well as physical and social disability. Physical disability falls into two categories, fine motor skill (e.g. picking, grasping, holding small objects - that use the small muscles of the fingers, toes, wrists, lips, and tongue) and gross motor skill (e.g. walking, kicking, jumping, and climbing stairs - that use the large muscles in the arms, legs, torso, and feet) deficiency. Research shows that Game Therapy has a positive effect on improving the motor skills of children with DS. Suppose you have to conduct research and design a game therapy system for the children with DS to improve gross motor skills.

a) Which prototyping technique will you follow? Explain why. b) Construct a prototype for the system. c) Sketch out an experience map of your designed system.