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Key Ideas

  • Nutrition refers to the composition of food and how the various components of food affect the body.
  • Food is essential to all life, but it is particularly important for children, adolescents, and teens because it provides energy and nutrients needed for growth and healthy development.
  • Your diet should include a balance of the six essential nutrients-fats, carbohydrates, proteins, vitamins, minerals, and water.

Overview

In this introductory section, students learn about the importance of food in providing energy for daily activities, growth, and repair of body tissues. Students monitor their own diets. They learn about the six nutrients, the role of these nutrients in the body, and examples of foods that contain them. Students investigate the composition of different foods by testing some for the presence of carbohydrates, fats, and proteins.

Objectives

Students:

\checkmark identify the six essential nutrients, give examples, and describe the importance of each nutrient.

\checkmark determine the average amounts of fats, carbohydrates, and proteins they consume daily and compare with recommended guidelines.

\checkmark determine the presence of glucose, starch, protein, or fat in foods.

Vocabulary

amino acids, carbohydrate, digestion, fat, minerals, nutrition, protein, vitamin

Student Materials

Activity 1-1: Are You What You Eat?

  • Resource 1
  • Resource 2
  • Diet Data Sheet
  • Activity Report
  • Measuring cups and spoons; Glasses with 4 ounces and 8 ounces of liquid; Food labels; Fast Food information sheets; Food Models

Activity 1-2: What's in Your Food?

  • Resource 1: Part A Data Sheet
  • Resource 2: Part B Data Sheet
  • Activity Report
  • Glucose sugar solution; Egg white, raw; Butter, margarine, or vegetable oil
  • Test tubes; Test-tube holder; Water bath; Graduated cylinder; Brown wrapping paper; Plastic knife; Safety goggles; Starch solution; Iodine solution; Biuret solution; Benedict's solution; Medicine droppers (3); Small pieces of various foods (such as orange, apple, carrot, bread, peanut butter or peanuts, grapes, milk, bacon, hard-boiled egg, cheese, potato, banana, pieces of cooked chicken, cookies, doughnuts, butter, oil, or margarine, etc.)

Teacher Materials

Activity 1-1: Are You What You Eat?

  • Activity Report Answer Key
  • Diet and Calorie charts, Nutrition resource material; Food models; Food pyramid

Activity 1-2: What's in Your Food?

  • Activity Report Answer Key
  • Small pieces or samples of various types of foods such as orange, apple, carrot, bread, peanut butter or peanuts, grapes, milk, bacon, hard-boiled egg, cheese, potato, banana, pieces of cooked chicken, cookies, doughnuts, butter, oil or margarine, etc.

Advance Preparation

See Activities 1-1 and 1-2 in the Student Edition.

Activity 1-1: Are You What You Eat?

  • Ask students to bring in food labels, particularly of favorite foods to help with Resource 1.
  • Collect books on nutrition and food calorie lists to use as resources.
  • Duplicate class copies of the Food Nutrient Chart on TE pp. 15-17.

Activity 1-2: What's in Your Food?

  • Cut up foods to be tested and assemble so students can obtain them easily. Make control solutions: 1. Protein: egg whites beaten, 2. Sugar: 10 \ ml of corn syrup mixed with 90 \ ml of warm water.

Interdisciplinary Connections

Art Make a poster or a collage grouping pictures of the different food types.

Language Arts Write about differences between sugars, starches, fats, and proteins, which foods contain them, and how the body needs them.

Social Studies Study diet and foods from different parts of the world and from different periods in history. Design a “Heart Smart” restaurant as an interdisciplinary project. Include invitations, menus giving nutritional information, meal planning, and food preparation based on a cultural theme.

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