About Mark Shannon Books by Mark Shannon Subtraction Unplugged by (author) Barbara Rankie by (composer) Mark Shannon Addition Unplugged by (author) Barbara Rankie by (composer) Mark Shannon Multiplication Unplugged by (author) Barbara Rankie by (composer) Mark Shannon Division Unplugged by (author) Barbara Rankie by (composer) Mark Shannon Prime Ministers of Canada by (author) Blaine Selkirk by (composer) Mark Shannon Division Unplugged, CD/Book Kit by (author) Emad Girgis & Mark Shannon Division Unplugged, Audio CD by (author) Emad Girgis & Mark Shannon Addition Unplugged, CD/Book Kit by (author) Emad Girgis & Mark Shannon Subtraction Unplugged, CD/Book Kit by (author) Sara Jordan & Mark Shannon Addition Unplugged, Audio CD by (author) Emad Girgis & Mark Shannon Subtraction Unplugged, Audio CD by (author) Sara Jordan & Mark Shannon Multiplication Unplugged, CD/Book Kit by (author) Sebastian Hergott & Mark Shannon Multiplication Unplugged, Audio CD by (author) Sebastian Hergott & Mark Shannon