1.10 Usefulness of plants

Natural sciences

Grade 4

Life and way of living

Module 11

The usefulness of plants

Activity:

To discuss, investigate and describe the usefulness of plants [lo 1.1, 1.2, 1.3, 2.1]

Plants have other uses for people, besides providing food. Plants release the oxygen that people need to inhale. When plants die, they provide compost, which makes the soil fertile. Animals also live from plants, some animals shelter under plants and plants provide homes for birds, reptiles and some mammals. If we had no plants, we would also have no meat, milk and eggs, because the animals that provide these foods need plants for food.

Find answers to the following statements:

1. Aspirin, etc. is obtained from the bark of willow trees
2. It is used in ointments and tastes awful
3. It is obtained from sap (latex) that is collected from slashes in the bark of rubber trees
4. It protects against colds and is used to flavour food
5. It is used as medicine, flavourants in food, scent, beauty products, toiletries and insect repellents
6. It is obtained from the chamomile plant and can help you to relax
7. It is obtained from a range of trees
8. It is obtained from the fibres in the leaves of sisal plants
9. It is obtained from the seed fibres of the cotton plant

Summative mark

Assessment

LEARNING OUTCOME 1: SCIENTIFIC INVESTIGATIONSThe learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

Assessment Standards: We know this when the learner

1.1 plans investigations;

• takes the lead in investigating and collecting data;
• evaluates data and provides feedback on observations

2.1 recalls significant information

Memorandum

Answers to the statements:

1. herbs
2. garlic
3. tea
4. medicine
5. cork
6. rubber
7. cotton
8. castor oil
9. string

10. wood

11. tea