Natural Sciences and Technology Grade 6-A - Thunderbolt Kids
Natural Sciences and Technology Grade 6-A - Thunderbolt Kids Natural Sciences and Technology Grade 6-A - Thunderbolt Kids
4 Food processing NEW WORDS • processing • preserve • cure/curing • artificial sweeteners • preservatives VISIT Drying foods (video). goo.gl/3LTE2 54 KEY QUESTIONS • How do we make food last longer? • Is it possible to stop food from going o? • What can you do to prevent bacteria and germs getting into food? 4.1 Why do we need food processing? People have been processing food for thousands of years. Before the invention of fridges and freezers, people had to collect food in summer and store it because in winter food is often scarce. They found out that they could preserve food like meat and fish by salting and spicing, and then drying it -this is called curing the meat. In South Africa biltong and bokkoms are examples of cured meat and fish. Bokkoms (cured fish). 1 Pieces of meat hung up to dry and turn into biltong. 2
ACTIVITY: A REALLY old role play Work in groups of 4-5 You are time-travelers and you are joining the Thunderbolt Kids for your first jump through the wormhole! You may not take anything non-organic with you so no metal tins or plastic containers, and certainly no computers, cell phones or laptops! Come on! Follow the Thunderbolt Kids and jump through the wormhole to go back in time! Imagine being transported 350 years back into history and arriving with only the clothes you are wearing and whatever you have learnt in your head in EXACTLY the same place you are right now. It is late summer and you need to spend ayear wherever you are and survive until the wormhole opens again at that exact spot and allows you to return to 'the future'. Your mission: gather as much information on the local inhabitants and the food they eat, their ways of living and how they survive the elements and natural dangers in their environment. When you return you will need to explain how they preserved and processed dierent foods to last them through winter and how they packaged and protected this food from scavenging animals and pesky insects. Brainstorm this problem with your group. List as many dierent questions or problems that you can think of that will aect you: • immediately, • in about amonth's time, • in 6month's time, and Chapter 4. Food processing DID YOU KNOW? Biltong was invented by the Voortrekkers who travelled by ox-wagon during the Great Trek. They needed to preserve meat for the long journey. The raw meat was preserved using salt, vinegar and spices. 55
- 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 and 32: 7. What do plants store glucose as?
- Page 33 and 34: Examples of the foods in the food g
- 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: 4. Write a paragraph where you expl
- 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
- Page 83 and 84: KEY CONCEPTS • Food is processed
- Page 85 and 86: 5. A farmer wants to export some gr
- Page 87 and 88: I really enjoyed that, especially l
- Page 89 and 90: • arctic and alpine tundra are in
- Page 91 and 92: A unique South African ecosystem So
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- Page 95 and 96: In this man-made forest, there is n
- Page 97 and 98: • insectivores only eat ... can y
- Page 99 and 100: A food web in asavanna. There are a
- Page 101 and 102: • Forest ecosystem: grass, small
- Page 103 and 104: 7. When marking out your ecosystem
- Page 105 and 106: 2: 3: Animal species: 1: 2: 3: Chap
- Page 107 and 108: interdependent and they are connect
- Page 109 and 110: REVISION: 1. Provide a definition f
- Page 111: 10. What choices do you need to mak
ACTIVITY: A REALLY old role play<br />
Work in groups of 4-5<br />
You are time-travelers <strong>and</strong> you are joining the <strong>Thunderbolt</strong> <strong>Kids</strong> for<br />
your first jump through the wormhole! You may not take anything<br />
non-organic with you so no metal tins or plastic containers, <strong>and</strong><br />
certainly no computers, cell phones or laptops!<br />
Come on! Follow the<br />
<strong>Thunderbolt</strong> <strong>Kids</strong> <strong>and</strong> jump<br />
through the wormhole to go<br />
back in time!<br />
Imagine being transported 350<br />
years back into history <strong>and</strong><br />
arriving with only the clothes you<br />
are wearing <strong>and</strong> whatever you<br />
have learnt in your head in<br />
EXACTLY the same place you are<br />
right now. It is late summer <strong>and</strong><br />
you need to spend ayear<br />
wherever you are <strong>and</strong> survive<br />
until the wormhole opens again<br />
at that exact spot <strong>and</strong> allows you<br />
to return to 'the future'.<br />
Your mission: gather as much<br />
information on the local<br />
inhabitants <strong>and</strong> the food they<br />
eat, their ways of living <strong>and</strong> how<br />
they survive the elements <strong>and</strong><br />
natural dangers in their<br />
environment. When you return<br />
you will need to explain how they<br />
preserved <strong>and</strong> processed<br />
dierent foods to last them<br />
through winter <strong>and</strong> how they<br />
packaged <strong>and</strong> protected this<br />
food from scavenging animals<br />
<strong>and</strong> pesky insects.<br />
Brainstorm this problem with your group. List as many dierent<br />
questions or problems that you can think of that will aect you:<br />
• immediately,<br />
• in about amonth's time,<br />
• in 6month's time, <strong>and</strong><br />
Chapter 4. Food processing<br />
DID YOU KNOW?<br />
Biltong was invented<br />
by the Voortrekkers<br />
who travelled by<br />
ox-wagon during the<br />
Great Trek. They<br />
needed to preserve<br />
meat for the long<br />
journey. The raw meat<br />
was preserved using<br />
salt, vinegar <strong>and</strong><br />
spices.<br />
55
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