新课标 必修3 unit2 healthy eating.ppt

What are the three essential elements for us human beings to survive on the earth? We are what we eat Look at the following photos and decide if the food shown in the photos is junk food or healthy food. Give reasons for your decisions. I think … because … You’re what you eat! Which of these groups of foods do you like best? Which of them do you eat most often? Do you think we should eat each kind of food? What will happen if you do not eat a balanced diet? Personal eating habits: Class work Discuss the eating habits of some classmates and try to give them some advice. For example: Most of the members in our group have a healthy diet, they usually have bread, noodles, milk and rice porridge for their breakfast, which are usually rich/ high in fibre and protein. As for snack, …. As for their lunch and dinner, …. * Unit 2 Healthy Eating (warming up) water air food Functions of food Functions of food Maintain life Keep healthy Prevent diseases Supply energy Satisfy hunger Why we have to eat everyday? Do you know the food you eat helps you grow in different way? Slow energy food Fast energy food Foods that give fiber for digestion and health (eg protective food) Foods to grow bones and muscle (eg body-building food) Foods to give you energy energy-giving foods Rice Sugar Noodles potatoes bread Butter Cream Oils nuts Meat Eggs Cheese Milk tofu All vegetables (eg beans, mushrooms,…) All fruit(eg apples,peaches,…) Each day our body should receive 50 nutrients from the food we eat. Let’s take a closer look at the six essential nutrients. 1. Protein 2. Carbohydrates 3. Fat 4. Vitamins 5. Minerals 6. Water Nutrients of food fruits ripe peach rich in fibre vitamin grape What food is rich in fat / fibre / sugar /vitamin / protein ? green peach What food is rich in fat / fibre /sugar /vitamin / protein ? vegetables bean lettuce carrot mushroom rich in fibre vitamin rice corn noodle dumplings rich in fibre vitamin What is fo