Biography (nonfiction) 2,317 words, Level Z2 (Grade 5+), Lexile 1140LThe spring of 1953 was terrifying for parents in the United States. They braced themselves for the possibility of polio. Through his determination and unorthodox thinking, Jonas Salk developed a polio vaccine and children's lives were saved. Jonas Salk provides students an in-depth look into both Dr. Salk's life and his search for the vaccine. The book can also be used to teach students the elements of a biography and the proper use of hyphenated compound adjectives. The book and lesson are also available for levels Y and Z1.
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