Lehrplan; Instructional advice ; Lehrmaterial; Teaching material ; Music (psycholing.) ; Kindersprache (pathol.) ; Child language (pathol.) ; Specific language impairment; SLI; Dysgrammatismus (Kindersprache) ; Dysgrammatism (child language) ; Handicapped language acquisition ; Autism ; Language intervention; Children (speech therapy with) ; Speech therapy for children ; English