Natural Sciences and Technology Grade 6-A - Thunderbolt Kids

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2 Nutrients in food NEW WORDS • classification • carbohydrates • proteins • vitamins • nutrition • pyramid • immune system • insulate 22 KEY QUESTIONS • Why do Ihave to eat so many dierent things -why can't I just eat what I like? • I have heard that people say: 'You are what you eat...' - what does that mean? • What is so bad about sugary sweets -why shouldn't Ieat lots of them? • What is the dierence between a fat and an oil? 2.1 Food groups All living plants and animals need to feed or eat to give them energy to carry out the life processes. Plants make their own food from sunlight, water and carbon dioxide through the process of photosynthesis. Animals cannot make their own food and need to eat plants or other animals to get energy. People also have to eat plant or animal products to get energy to grow and develop. Classification oood groups The food we eat can be grouped or classified into dierent types or groups. We call these food groups. There are a four main food groups and each food group does adierent job in the body: • Carbohydrates • Proteins • Fats and oils • Vitamins and minerals
Examples of the foods in the food groups, carbohydrates, proteins and fats and oils. We classify food according to these food groups, although most foods contain a mixture of more than one nutrient group. Let's look at each food group separately and see why each one is important: 1. Carbohydrates: • They are the most important source of energy for the body. • They store energy for the body. • Carbohydrates are an important part of the body structure. • Foods that contain carbohydrates are: pasta, samp, potatoes, cereal, mealie meal, porridge and bread. Chapter 2. Nutrients in food 23
Page 1 and 2: Natural Sciences and Technology Gra
Page 3 and 4: AUTHORS LIST This book was written
Page 5 and 6: Welcome to Grade 6 and to Natural S
Page 7 and 8: Hey! My name is Tom. I have two pla
Page 9 and 10: Hello! My name is Sophie. One of my
Page 11: Table of Contents Life and Living a
Page 15 and 16: Scientists have found out exactly h
Page 17 and 18: - stem (sugar cane) - seeds (wheat
Page 19 and 20: 2. Design a poster for your Gr 4fri
Page 21 and 22: Sunflower seeds. Lettuce. Sugar can
Page 23 and 24: QUESTIONS: 1. Was it easy to distin
Page 25 and 26: QUESTIONS: 1. Which test do you thi
Page 27 and 28: QUESTIONS: 1. Make a list of living
Page 29 and 30: REVISION: 1. List the four things t
Page 31: 7. What do plants store glucose as?
Page 35 and 36: 3. Fats and oils: Meat. Lentils. Al
Page 37 and 38: Name of vitamin Sources Function Vi
Page 39 and 40: Very often food manufacturers add d
Page 41 and 42: The natural foods contained a mixtu
Page 43 and 44: KEY CONCEPTS • Food groups: - foo
Page 45 and 46: Name of vitamin Vitamin A Vitamin C
Page 47 and 48: • The food in the middle of the p
Page 49 and 50: Tuesday Wednesday Thursday Friday t
Page 51 and 52: 4. What important food group is Raj
Page 53 and 54: Breakfast: Option 1: Fruit loops Op
Page 55 and 56: Supper: Option 1: Chicken pieces Op
Page 57 and 58: Causes of apoor diet There are many
Page 59 and 60: • Diabetes: This is adisease that
Page 61 and 62: 3. On your poster, you must include
Page 63 and 64: 4. Write a paragraph where you expl
Page 65 and 66: ACTIVITY: A REALLY old role play Wo
Page 67 and 68: 2. Can you predict how the locals w
Page 69 and 70: Benefits of food processing Food pr
Page 71 and 72: Food Reason for being processed Raw
Page 73 and 74: ACTIVITY: Class discussion INSTRUCT
Page 75 and 76: Highly processed foods: • Highly
Page 77 and 78: preserve it, just like people did 3
Page 79 and 80: ACTIVITY: Comparing traditional and
Page 81 and 82: 5. Use the space below to draw a fl
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KEY CONCEPTS • Food is processed
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5. A farmer wants to export some gr
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I really enjoyed that, especially l
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• arctic and alpine tundra are in
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A unique South African ecosystem So
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A healthy ecosystem is one in which
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In this man-made forest, there is n
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• insectivores only eat ... can y
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A food web in asavanna. There are a
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• Forest ecosystem: grass, small
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7. When marking out your ecosystem
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2: 3: Animal species: 1: 2: 3: Chap
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interdependent and they are connect
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REVISION: 1. Provide a definition f
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10. What choices do you need to mak
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Did you know that all matter is act
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We would see that the particles in
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3. If you should come into contact,
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In the next table there are 3 pictu
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2. Did they behave dierently? 3. In
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7. What do we call the process when
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We have learnt that materials exist
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A mixture of dierent coloured jelly
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3. Separate the mixture into a pile
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2. Draw a picture of the mixture. 3
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3. Can you separate the mixture int
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INSTRUCTIONS: 1. Place 10 scoops of
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Picture of mixture INSTRUCTIONS (Pa
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REVISION: 1. What is amixture? 2. L
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Now that we know more about mixture
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ACTIVITY: When is amixture also aso
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What is asolution? When two substan
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Wait! How is it possible for one su
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4. What do you think happened to th
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In the previous chapter, we saw how
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4. Which method do you think works
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3. Complete the following sentences
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dissolved limestone can crystallise
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KEY CONCEPTS • A solution is aspe
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4. What was the mixture of sugar an
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It was quite dicult in the beginnin
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changes are called. QUESTIONS: 1. W
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4. What do we call it when we have
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In the first investigation, we will
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3. What did we change in this inves
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RESULTS: The eect of grain size on
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INVESTIGATION: Does stirring increa
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3. What did we change in this inves
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REVISION: 1. What are the 3factors
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We have learnt a lot about solution
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ACTIVITY: Thinking about pollution
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8. How do you think oil ends up in
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Wetlands are not necessarily wet th
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INSTRUCTIONS: 1. Drill ahole in the
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QUESTIONS Do you remember studying
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REVISION: 1. Look at the picture be
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Water is very important for us and
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QUESTIONS 1. What does 'clean water
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ACTIVITY: Cleaning water in astill
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Filtering is agood way of removing
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2. What size and shape will your fi
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MAKE: Now that you have a design, i
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How is water cleaned by municipalit
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STEP 3: AERATION The raw water now
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6. Name the 5steps in the water tre
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Natural Sciences and Technology Grade 6-A - Thunderbolt Kids

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