Intensive Motor Learning Camp. Participants will complete child-centered, age-appropriate, goal-directed 2-week intensive motor learning camps (summers of 2017, 2018, and 2019). These will be full day programs in peer-supported environments. All sites are experienced in such motor learning interventions. Fidelity of all interventions will be facilitated by standardized operating procedures, videotaping, and scheduled site visits. CIMT during the first week will be followed by bimanual therapy during the second. Tasks will be graded and selected according to relative function with increasing complexity across the spectrum. Tasks will be both symmetrical and asymmetrical, geared to pre-set goals and age-appropriate activities of daily living and individual interests. Intensive motor learning will be focused within 2 hours each day of goal-directed therapy working 1:1 with a dedicated OT. The remaining hours will include gross motor (1.5), group motor (1.5), lunch (1), social snack (0.5x2), and fun breaks (0.5). Total dose is therefore 7.5 hours per day (75 hours total). These activities include upper limb motor activities focused on general activities of daily living rather than individualized goals. Following the 10 day intervention, children will receive a structured home program based on the same principles with ongoing therapist support if needed in the form of phone calls, surveillance, and documentation (home program log) for 6 months.