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Navigating through a crowded classroom, Joe D' Alexanderâs voice resonates through speakers for those hard of hearing like a beacon guiding ships through the darkness. With patience and humor, he teaches basic computer skills to a silver-haired audience eager to bridge the digital divide. After the death of his wife 16 years ago, D' Alexander, 82, looked for a way to keep busy and began volunteering at SeniorNet, an international non-profit aimed at helping older adults transition to the digital world. With a background in computers, he quickly became an instructor and the site coordinator.