Lesson Notes By Weeks and Term - Senior Secondary 2

Sewage disposal

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TERM – 2ND TERM

WEEK SIX

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:

Subject: HEALTH EDUCATION

Topic: SEWAGE DISPOSAL

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

I.) Identify the two types of sewage

II.) Identify the methods of sewage disposal

III.) Identify the effects of improper waste disposal.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher identifies and explains the types of sewage disposal.

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher discuss the methods of sewage disposal and describe the possible effects of improper sewage disposal.

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

SEWAGE DISPOSAL

Sewage generally falls into two categories:

  1. Domestic Sewage: From households and establishments, including wastewater from sinks, toilets, showers, and washing machines.
  2. Industrial Sewage: Generated by industries and commercial activities, containing various chemicals, heavy metals, and other pollutants depending on the industry's operations.

Methods of sewage disposal

There are several methods for disposing of sewage, including:

  1. Sewage Treatment Plants: Facilities that treat sewage to remove contaminants before discharging it back into the environment.
  2. Septic Tanks: Common in rural areas, septic tanks treat sewage on-site by separating solids from liquids and allowing natural processes to break down the waste.
  3. Sewage Disposal Systems: Some areas utilize systems like cesspools or decentralized treatment systems for sewage disposal.
  4. Land Application: Treated sewage sludge can be used as fertilizer in agriculture, though careful regulation is necessary to prevent environmental contamination.

Effects of improper waste disposal

Improper waste disposal can have significant negative effects on the environment, public health, and the economy. Some of these effects include:

  1. Dumping waste improperly can lead to the contamination of soil and water bodies through leaching of hazardous chemicals and pollutants.
  2. Open burning of waste releases harmful pollutants and greenhouse gases into the atmosphere, contributing to air pollution and climate change.
  3. Improper disposal practices such as illegal dumping and littering can disrupt natural habitats, endanger wildlife, and degrade ecosystems.
  4. Exposure to improperly disposed waste can pose serious health risks to humans, including respiratory problems, infections, and other illnesses due to the presence of pathogens, toxic chemicals, and pollutants.
  5. Unsightly litter and polluted environments can deter tourism, reduce property values, and impose cleanup costs on communities, negatively impacting local economies.

EVALUATION: 1. Identify and describe the two categories of sewage disposal.

  1. Identify 3 effects of sewage disposal
  2. Mention 4 effects of improper waste disposal.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively