Students with physical disabilities often benefit from the use of technology designed to increase their capability to participate in classroom activities. Technological devices used by these students may be relatively simple, such as leg braces for students with orthopedic problems, or they may be as complex as a computer that synthesizes speech patterns for children whose disability causes speech disorders (see Speech Synthesis). Some of these technological devices are very expensive and strain the budgets of many school districts. Educators and parents work closely to determine the best use of school resources for classroom modifications and acquisitions of technology for all children with special needs. See also Education of Students with Physical Disabilities.