On shared knowledge: teachers and severely subnormal children.
D002648:Child; D003118:Color Perception; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D005556:Form Perception; D006801:Humans; D007360:Intelligence; D008297:Male; D012858:Size Perception; D013663:Teaching / Q000379:methods*; D014705:Verbal Behavior