A science teacher asked the students to perform the following activities as…
2019
A science teacher asked the students to perform the following activities as homework. For which activity will the students need to use local materials?
- A.
To make a chart showing exercises for maintaining healthy eating habits
- B.
To observe how grains like rice/wheat are cleaned and separated at home and identify and draw the harmful organisms seen in them
- C.
To prepare a balanced diet chart according to age and physical needs
- D.
To collect information from newspapers and internet about diseases caused by unhygienic food
Attempted by 19 students.
Show answer & explanation
Correct answer: B
Correct activity: To observe how grains like rice/wheat are cleaned and separated at home and identify and draw the harmful organisms seen in them.
Why this activity needs local materials:
You need actual grain samples (rice or wheat) and the household tools used in cleaning (sieve, tray, cloth) to observe the cleaning and separation process directly.
Identifying harmful organisms requires seeing real specimens; a magnifying glass or hand lens and paper/pencil are useful for observing and drawing details.
This makes the task practical and based on materials commonly available at home, so it clearly uses local materials.
Safety and guidance:
Wash hands before and after the activity. Do not taste or eat any samples.
Avoid handling mouldy or clearly spoiled grains; ask an adult for help when using tools or handling large amounts.
Use clean trays or plates for observation and keep the work area tidy.
Why the other activities do not require local physical materials:
Making a chart of exercises for healthy eating habits is knowledge- and idea-based; it can be created from class notes or general examples without household items.
Preparing a balanced diet chart uses information about nutrition and personal needs; students can use textbooks, family meal patterns, or teacher guidance rather than physical local materials.
Collecting information from newspapers and the internet is a research task that relies on external media sources, not items from the immediate household.