The need for assessments that account for the varying contexts of children's motor behavior is presented. At this time many assessments are based on hierarchical theories of motor development. Distributed control models of development are more capable of accounting for environmental contexts. The concept of an affordance provides a link between the child and the environment. An ideal model of an assessment is presented that accounts for day to day variation in children's behavior. A taxonomy of tasks and skill acquisition is presented in conjunction with goal attainment scaling as a method of documenting and planning for a child's developmental progression. Environmental mapping is included as a tool for analysis of intervention plans.