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
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- Page 73 and 74: ACTIVITY: Class discussion INSTRUCT
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4 Food processing<br />
NEW WORDS<br />
• processing<br />
• preserve<br />
• cure/curing<br />
• artificial<br />
sweeteners<br />
• preservatives<br />
VISIT<br />
Drying foods (video).<br />
goo.gl/3LTE2<br />
54<br />
KEY QUESTIONS<br />
• How do we make food last longer?<br />
• Is it possible to stop food from going o?<br />
• What can you do to prevent bacteria <strong>and</strong> germs getting<br />
into food?<br />
4.1 Why do we need food processing?<br />
People have been processing food for thous<strong>and</strong>s of years. Before<br />
the invention of fridges <strong>and</strong> freezers, people had to collect food in<br />
summer <strong>and</strong> store it because in winter food is often scarce. They<br />
found out that they could preserve food like meat <strong>and</strong> fish by<br />
salting <strong>and</strong> spicing, <strong>and</strong> then drying it -this is called curing the<br />
meat. In South Africa biltong <strong>and</strong> bokkoms are examples of cured<br />
meat <strong>and</strong> fish.<br />
Bokkoms (cured fish).<br />
1<br />
Pieces of meat hung up to dry <strong>and</strong><br />
turn into biltong.<br />
2
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