Informational (nonfiction) 1,075 words, Level T (Grade 3), Lexile 990LColor blindness, or color vision deficiency (CVD), is the world's most common genetic disorder, affecting more than 10 million people in the United States alone. Color Blindness provides students with a comprehensive explanation of the causes and effects of this condition. The book can also be used to teach students how to determine an author's purpose and to use hyphenated compound adjectives. The book and lesson are also available for levels Q and W.
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