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
ACTIVITY: Dierence between a starch and asugar MATERIALS: • mealie flour • flour • cooked rice, potato, bread • glucose sweets • sugar • sugar cane, if possible • fresh fruit • blindfold • clipboard INSTRUCTIONS: 1. Work in pairs. 2. One partner must be blindfolded. 3. On a piece of paper list the numbers 1-10. 4. The other partner must let the blindfolded partner taste each of the foods marked 1-10. If it is flour, use a teaspoon to spoon the flour into your partner's mouth. If it is akernel like a rice or mealie kernel, or acube of fruit, put it in the palm of their hand and let them eat it themselves. 5. After each taste your blindfolded partner must guess if it is a sugar or astarch based on the taste. 6. Record your partners answers on the piece of paper containing the numbers 1-10. 7. Swap with your partner and repeat the test. 12 Life and Living
QUESTIONS: 1. Was it easy to distinguish between the sugar and the starch each time? Which foods did you find dicult to classify? 2. What can you say about the dierence between a starch and a sugar based on taste? Using TASTE to check if afood is asugar or astarch is not very reliable. There is aspecial test that scientists use to see if afood product is a starch or not. It is called the Iodine Starch Test. Iodine solution is aspecial solution that is normally a brown liquid. When iodine solution is dropped on starch, the iodine and starch combine and produce a blue colour. We use this to test whether there is starch in afood product. Let's see how this works! ACTIVITY: The iodine starch test Note: There will be NO tasting in this activity. MATERIALS: • iodine • the same foods used in the taste test (they should be marked 1-10 ) Chapter 1. Photosynthesis 13
- 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: Sunflower seeds. Lettuce. Sugar can
- 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 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
QUESTIONS:<br />
1. Was it easy to distinguish between the sugar <strong>and</strong> the starch<br />
each time? Which foods did you find dicult to classify?<br />
2. What can you say about the dierence between a starch <strong>and</strong><br />
a sugar based on taste?<br />
Using TASTE to check if afood is asugar or astarch is not very<br />
reliable.<br />
There is aspecial test that scientists use to see if afood product is<br />
a starch or not. It is called the Iodine Starch Test.<br />
Iodine solution is aspecial solution that is normally a brown liquid.<br />
When iodine solution is dropped on starch, the iodine <strong>and</strong> starch<br />
combine <strong>and</strong> produce a blue colour. We use this to test whether<br />
there is starch in afood product.<br />
Let's see how this works!<br />
ACTIVITY: The iodine starch test<br />
Note: There will be NO tasting in this activity.<br />
MATERIALS:<br />
• iodine<br />
• the same foods used in the taste test (they should be marked<br />
1-10 )<br />
Chapter 1. Photosynthesis<br />
13
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