There are a large number of children with motor difficulties including those that have dif-
ficulty producing movements qualitatively well enough to improve in perceptuo-motor
learning without intervention. We have developed a training method that supports active
movement generation to allow improvement in a 3D tracing task requiring good compliance
control. Previously, we tested a limited age range of children and found that training
improved performance on the 3D tracing task and that the training transferred to a 2D
drawing test. In the present study, school children (5–11 years old) with motor difficulties
were trained in the 3D tracing task and transfer to a 2D drawing task was tested. We used a
cross-over design where half of the children received training on the 3D tracing task during
the first training period and the other half of the children received training during the second
training period. Given previous results, we predicted that younger children would initially
show reduced performance relative to the older children, and that performance at all
ages would improve with training. We also predicted that training would transfer to the 2D
drawing task. However, the pre-training performance of both younger and older children
was equally poor. Nevertheless, post-training performance on the 3D task was dramatically
improved for both age groups and the training transferred to the 2D drawing task. Overall,
this work contributes to a growing body of literature that demonstrates relatively preserved
motor learning in children with motor difficulties and further demonstrates the
importance of games in therapeutic interventions.