A+nutritional+analysis+of+America's+obsession+with+fatty+foods

__**//A nutritional analysis of America's obsession with fatty foods//** __

**Purpose **: The purpose of this lesson is for students to recognize that obesity is also a form of undernourishment . Students will look at what people eat across the globe, and analyze the difference in the diet in the U.S. In this lesson, students will identify the "bad chemicals" in fatty foods, including trans fats, and learn how this can harm their body. **Objectives**:
 * Students will understand that malnutrition is caused by not getting enough of an essential nutrient. A person could be obese but still malnourished if his diet is not well-balanced.
 * Students will draw the structural formula of cis and trans fatty acids and circle which fatty acid is bad for you via a screencast.
 * Students will explain why Fast food is bad for people.
 * Action Plan: **
 * Before class, I will place pictures and captions from Time Magazine photo essay, “What the world eats” (found online at []) around the classroom. I will hide them with a piece of construction paper until I am ready for the activity.
 * As students start to gather into the classroom they will notice the [|world-o-meter] displayed on the interactive white board. I will ask students the question, “//Why are there 1 billion people in the world malnourished and over one billion people in the world overweight//?” I will further probe student ideas by prompting them with these questions:
 * Is obesity a form of malnourishment?
 * Are obese people receiving proper nutrients even if they are severely overweight?
 * After this 5-7 minute warm-up, I will unravel the construction paper from the images around the classroom. I will provide each student with a worksheet (shown below) and the following handout: [|Hungry Planet: “What the world eats”] I will instruct students to answer the questions while they view the pictures and read the captions. They will submit the handout as an exit ticket.
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">[[file:What the world eats.pdf]]
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;"> After 10 minutes we will rejoin as a class and discuss students’ answers to the questions and their overall response to the pictures. I will prompt them with the following questions:
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">After hearing the podcast and viewing the images, was there anything that shocked or surprised you?
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">Did you notice any relationships between or trends shown by the pictures?
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">What types of foods seem to be the most expensive?
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">Is healthfulness of foods related to the time it takes to prepare those foods?
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">What nutrients might be missing from families with lower incomes?
 * <span style="background-color: white; font-family: Arial,sans-serif; font-size: 10pt;">Which country spends the most money on Fast food? Is this harmful for them? Why or Why not?
 * <span style="font-family: Arial,sans-serif; font-size: 10pt;">After this 6-8 minute class discussion, I will verbally explain to students that most dietary fat consumed in the U.S comes from processed meat, poultry, fish, and dairy products. Fast foods and deep-fried foods-such as hamburgers, french fries, fried chicken, and many snack items – add even more dietary fat. In addition, if your intake of food energy is higher than what you expend in physical activity, your body converts excess proteins and carbohydrates into fat for storage. This is why high consumption and lack of physical activity can cause health problems including obesity and atherosclerosis. According to the 2005 Dietary Guidelines, most U.S. citizens obtain about 33% of their total food calories from fats. However there are good fats called unsaturated fats and bad fats called trans-fats.

<span style="font-family: Arial,sans-serif; font-size: 10pt;">**Homework**: For homework, students will explain in a blog entry on their wikispace why unsaturated fats are good, and trans fats are bad. Using Dabbleboard they will view the chemical structure of an unsaturated fatty-acid and a trans fatty acid. They will chat with other classmates to identify the structure shown is cis or trans, and discuss why they think so. They will then draw their own unsaturated fatty acid and ask others to label the cis and trans groups. They will also identify the cis and trans groups for the structures of 3 other classmates. //Students can visit the Worldhungerunit wikispace for tutorials on how to use Dabbleboard.//

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