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Activity 7: Disease Transmission Simulation

Students will model the spread of HIV (and other infectious diseases) through “fluid exchange”. Each student will transfer the contents of their water cup to other students’ water cups. One cup will be “contaminated” with baking soda (for a basic pH). Indication of the pathogen will be visualized by phenolphthalein color change. Students will see how quickly a disease can spread and determine the growth model of the transmission.