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eBook: The Nature of Matter Big Book - (PDF version - 1-User Download) - ISBN 978-1-55319-373-9 - Grade 5 - 8 VariesBy:Default Les pochettes en cellophane transparentesThis is science made easy! You don t have to be a rocket scientist to understand matter and energy. Our Combined resource includes all the important concepts in an easy to understand way using simple language and vocabulary.