Horsford’s Acid Phosphate: Cure or Con?
Students analyze images of a 19th century advertisement for messages about chemicals in medicinal products and about techniques of persuasion in early advertising. This simple decoding activity has been taken from a larger lesson with many slides titled “History of Chemicals in the Environment." To access this lesson, type the title with quotes into the PLS keyword search bar.
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Horsford’s Acid Phosphate: Cure or Con?
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