Is there a pond or river around your house or school? Go and look around and observe these things:

• Can you see algae in or around the water?

• Where else have you seen algae?

• Are there plants growing on the side or in water? Find out their names. Draw some of these in your note book.

• Do you think these were planted by someone or did they grow on their own?

• What else can you see in water? Make a list.

Disclaimer: This section involves the process of one’s own observation and gathering information. Considering the sustenance of this process, sample answers have been provided for some of the given questions. These answers will aid the students in framing their thoughts and observations.

When the water gets stagnant for a very long time, the algae start growing in them. This water also contains tiny creatures that cannot be seen by the simple eyes.

Algae can also be seen on walls, buildings and pipelines which are continuously in contact with water.

When the water is stagnant for a long period, then other plants start to grow on its periphery, these plants are not planted by anyone but they grow by themselves when their seeds get settled at such places.