acat.WhatDoesHannahHear?ThePictureCommunicationSymbols©1981©2015byMayer-JohnsonLLCaTobiiDynavoxcompany.AllRightsReservedWorldwide.Usedwithpermission.Boardmaker®isatrademarkofMayer-JohnsonLLC.ahorn.acat.asnake.ababy.apolicecar.axylophone.abird.WhatDoesHannahHear?adrum.ThePictureCommunicationSymbols©1981©2015byMayer-JohnsonLLCaTobiiDynavoxcompany.AllRightsReservedWorldwide.Usedwithpermission...