Thursday 18 October 2012

Is Pluto a planet?

Peka Sains Year 6



Date
:
15-4-2012
Activity Code
:
6 / 3 / 1.2 / 2
Theme
:
Investigating Materials
Topic
:
1 Food Preservation
Learning Outcomes
:
1.2 Sythesizing the concept of food
      preservation
Aim
:
To collect and display examples of
food using drying method
Method
:
1. Work in groups to collect
     5 dried food specimens.
2. Put each type of specimens
     in separate transparent
     plastic sachet.
3. Seal each sachet.
4. Paste and label the samples
    on the manila card.
5. Present and display the
    chart to the class.

Observation
:

1. List the specimens that you have collected.

Dried Food
1.
Dried Chilies
2.
Dried Banana
3.
Dried Mango
4.
Fish Crackers
5.
Squid
Discussion
:

1. What is the condition of the specimens?
    Dry, water-free, light .

2. What will happen if the specimens are not dried?
    The food will turn bad.

3. Give reason why the dried food will not turns bad?
    Microorganism cannot grow in 
   a water-free environment.

4. What is the conditions for microorganisms to grow?
    Microorganisms need air, suitable acidity and 
    temperature to grow.

Conclusion   :    Microorganisms cannot grow in a
                         water-free environment therefore
                        drying can preserve the food and
                        make the food last longer.