## Global Health Lesson 3: Swine Flu Case Study (High School)

In this lesson, students will practice their skills in moving between the four representations of a linear set of data. Students will analyze rates of infections as one of the factors that determines if an influenza virus is considered as endemic, epidemic, or pandemic. Before delivering this lesson, students should know how to graph data and how to find the slope and intercept.

Big Idea & and for this lesson

Show students the 4 minute video Swine Flu Press Conference from the Center for Disease Control (CDC).

http://www.youtube.com/watch?v=hE5qGOd8U48

Big Idea & and for this lesson

**Linear Relationships:**Linear relationships can be presented in graph, table, equation, or word form.**Rates of Infection:**One of the factors that determines if an influenza virus is considered endemic, epidemic, or pandemic is the rate of infection.**Decision-Making:**Mathematical data, such as infection rates and mortality rates, are important tools used by decision-makers faced with an outbreak of an infectious diseases.

- Computer with internet access, speakers, and projector
- Graph paper
- Chart paper or poster paper (for students to create a short presentation)
- Swine Flu Case Study-Part I Handout(1 per student)
- Teacher Answer Key for Student Handout
- World Health Organization Fact Sheet Handout (1 per student).

- Preview the CDC Press Conference video. http://www.youtube.com/watch?v=hE5qGOd8U48
- Photocopy the Student Handouts.
- Do the math. Run through the activity yourself so that you are prepared to answer students’ questions.
- Students will need to read the Student Background Reading on influenza from the Introduction to Global Health section of the curriculum prior to participating in this math activity. The reading will provide them with background information on the 1918 influenza pandemic that is mentioned in the case study for this math activity.
- Assign the World Health Organization Fact Sheet Handout as a pre-reading homework assignment.

**Essential Question**- When should we alert the public to the danger of an influenza virus?

**Students Will Know…**- The infection rate for a given disease is the number of infected people, divided by the total population.
- The meaning of slope can be found by finding a definition for the quotient of the dependent variable, divided by the independent variable (y-units / x-units).

**Vocabulary**- Endemic
- Epidemic
- Influenz
- Intercept
- Linear relationship
- Mortality
- Pandemic
- Slope
- Vaccine
- Virus

**Students will be able to…**- Find the slope and intercept of a graph.
- Present a linear relationship in graph, table, equation, or word form.
- Change a linear relationship from a graph to equation form.
- Create an equation from a written explanation.

**Hook**Show students the 4 minute video Swine Flu Press Conference from the Center for Disease Control (CDC).

http://www.youtube.com/watch?v=hE5qGOd8U48