Week: Ten

Class: Primary Three

Topic:  More about water purification

Objectives: At the end of the lesson, pupils should be able to:

1. practicalize

2. practical.

Reference material: Stove, Water, Sieve cloth, TCP

Content:

WATER PURIFICATION

Ways of water purification

BOILING: Boiling is sufficient to kill pathogenic bacteria, viruses and protozoa (WHO, 2015). If water is cloudy, let it settle and filter it through a clean cloth, paper-boiling water towel, or coffee filter. Bring water to a rolling boil for at least one minute.

FILTRATION: Filtration is the process of separating suspended solid matter from a liquid, by causing the latter to pass through the pores of some substance, called a filter. The liquid which has passed through the filter is called the filtrate. Water.... View More