IDRT - Con-SIGN-tration 1, 2, 3, & 4 购买 信息
Special Price  $59.95  Regular Price  $69.95

Con-SIGN-tration games on 4 CD-ROMs challenge reading and memory skills by requiring the player to match ASL pictures to English words that disappear if no match is made. Each CD game covers 10 different categories and related vocabulary.....