First Term Geography revision for SS 1

Class: SS 1
Term: First Term
Week: 11
Age: 15 years
Duration: 60 minutes
Subject: Geography
Curriculum Theme: Revision
Focal competence: Integration of the term’s curriculum competencies
Key competencies/values: Critical Thinking; Communication
Skills:

• Curriculum skills covered in Weeks 1-10

Previous Lesson: Effects of Earth’s Revolution Seasons, Equinoxes and Solstices
Topic: Revision and Consolidation
Subject Matter: core term topics, taught skills, common misconceptions, revision exercises

Specific Objectives

By the end of the lesson, pupils/students should be able to:

Cognitive Domain

• recall the key concepts taught during the term;

Psychomotor Domain

• apply the term’s knowledge and skills in written, oral or practical tasks.

Reference Materials

The following resources were used in planning this lesson:

• 2025 New Revised Senior Secondary Education Curriculum (SSEC)
• Relevant State Unified Scheme of Work
• A suitable Geography textbook for SS 1
• The HeadTeacher Scheme of work For The New Revised Senior Secondary Education Curriculum (SSEC)

Instructional Materials

The teacher will teach this lesson with the aid of:

• Class notes from Weeks 1-10
• Approved Geography textbooks for SS 1
• Whiteboard/Blackboard and markers/chalk
• Prepared revision exercises/past questions
• Maps, globes, or charts (if relevant to specific topics being revised)

Rationale for the Lesson

This lesson is essential for reinforcing the geographical knowledge and skills acquired throughout the First Term. It provides students with an opportunity to review core concepts, address areas of difficulty, and prepare adequately for examinations. Effective revision ensures a deeper understanding and retention of the curriculum content.

Prerequisite/Previous Knowledge

Students are expected to have a foundational understanding of all topics covered in Geography during the First Term (Weeks 1-10).

Lesson Content/Board Summary

Revision and Consolidation

1. Geography as a Discipline

Geography is the scientific study of the Earth’s surface, including its physical features, climate, population, and how humans interact with their environment. It seeks to understand where things are, why they are there, and how they develop and change.

Branches of Geography:

1. Physical Geography: Focuses on the natural environment, including landforms, climate, soils, vegetation, and water bodies.
2. Human Geography: Deals with human activities and their impact on the Earth, such as population, settlements, economic activities, and culture.
3. Regional Geography: Studies specific regions of the world, integrating both physical and human aspects.

Importance of Geography:

1. Helps in understanding environmental issues and their solutions.
2. Assists in planning and development (urban planning, resource management).
3. Provides knowledge about different cultures and societies.
4. Aids in navigation and understanding global connections.

2. The Earth and its Movements

The Earth is an oblate spheroid, slightly flattened at the poles and bulging at the equator. Its movements include rotation and revolution.

Movements of the Earth:

1. Rotation: The spinning of the Earth on its axis from west to east, completing one rotation in approximately 24 hours.
2. Effects of Rotation:
   1. Day and night.
   2. Apparent movement of the sun, moon, and stars.
   3. Deflection of winds and ocean currents (Coriolis effect).
   4. Tides.
3. Revolution: The movement of the Earth in an elliptical orbit around the sun, taking approximately 365¼ days to complete one revolution.
4. Effects of Revolution:
   1. Changing seasons (summer, autumn, winter, spring).
   2. Varying lengths of day and night.
   3. Different times of sunrise and sunset.
   4. Occurrence of solstices (June 21/22 and December 21/22) and equinoxes (March 20/21 and September 22/23).

3. Latitude and Longitude

These are imaginary lines used to locate positions on the Earth’s surface.

Latitude:

1. Imaginary lines running east to west, parallel to the Equator.
2. Measured in degrees (0° to 90°) north or south of the Equator.
3. The Equator is 0° latitude.
4. Lines of latitude are called parallels.
5. Used to determine climatic zones.

Longitude:

1. Imaginary lines running north to south, from pole to pole.
2. Measured in degrees (0° to 180°) east or west of the Prime Meridian (Greenwich Meridian).
3. The Prime Meridian is 0° longitude.
4. Lines of longitude are called meridians.
5. Used to determine time zones.

4. Time

Time on Earth is determined by longitude and the Earth’s rotation.

Key Concepts:

1. Local Time: The time of a particular place determined by the apparent position of the sun. Places on the same meridian have the same local time.
2. Standard Time: The uniform time adopted by a country or region, usually based on the local time of a central meridian. This avoids confusion caused by numerous local times.
3. Greenwich Mean Time (GMT): The mean solar time at the Prime Meridian (0° longitude) passing through Greenwich, London. It is the international reference for time.
4. International Date Line (IDL): An imaginary line, mostly following the 180° meridian, where one day ends and the next begins. Crossing it eastward means subtracting a day, while crossing it westward means adding a day.

Calculation of Time:

1. The Earth rotates 360° in 24 hours.
2. Therefore, 1 hour = 360° / 24 = 15°.
3. 1° longitude = 4 minutes (60 minutes / 15°).
4. When moving eastward, time increases; when moving westward, time decreases.

5. Rocks

Rocks are naturally occurring solid aggregates of one or more minerals. They form the Earth’s crust.

Classification of Rocks:

1. Igneous Rocks: Formed from the cooling and solidification of molten magma or lava.
   1. Intrusive (Plutonic): Cool slowly beneath the Earth’s surface, forming large crystals (e.g., Granite, Gabbro).
   2. Extrusive (Volcanic): Cool rapidly on the Earth’s surface, forming small or no crystals (e.g., Basalt, Pumice).
2. Sedimentary Rocks: Formed from the accumulation and compaction of sediments (fragments of other rocks, organic matter, or chemical precipitates).
   1. Clastic: Formed from rock fragments (e.g., Sandstone, Shale, Conglomerate).
   2. Organic: Formed from remains of plants and animals (e.g., Coal, Limestone).
   3. Chemical: Formed from precipitation of minerals from water (e.g., Rock Salt, Gypsum).
3. Metamorphic Rocks: Formed when existing igneous or sedimentary rocks are transformed by heat, pressure, or chemical reactions.
   1. Examples: Marble (from Limestone), Slate (from Shale), Gneiss (from Granite), Quartzite (from Sandstone).

Economic Importance of Rocks:

1. Source of building materials (granite, marble, sandstone).
2. Source of fuel (coal, petroleum in sedimentary basins).
3. Source of precious minerals and metals (gold, iron ore).
4. Used in agriculture (limestone for soil treatment).

6. Weather and Climate

Weather refers to the atmospheric conditions of a place over a short period, while climate is the average weather condition over a long period (typically 30 years).

Elements of Weather and Climate:

1. Temperature: Degree of hotness or coldness of the atmosphere. Measured by a thermometer.
2. Rainfall: Water falling from the atmosphere to the Earth’s surface. Measured by a rain gauge.
3. Atmospheric Pressure: The force exerted by the weight of air on a unit area of the Earth’s surface. Measured by a barometer.
4. Humidity: The amount of water vapour in the atmosphere. Measured by a hygrometer.
5. Wind: Air in motion. Measured by an anemometer (speed) and wind vane (direction).
6. Sunshine: Duration of sunlight received. Measured by a sunshine recorder.

Teaching Methods/Instructional Techniques

Discussion, Question and Answer, Explanation, Review of Worked Examples, Guided Practice, Group Work, Individual Practice.

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Activating Prior Knowledge

Teacher’s Activity: The teacher welcomes the students to the revision class and explains the purpose of the lesson: to review and consolidate key topics from the First Term. The teacher asks students to briefly mention any topic they found challenging during the term.

Pupils’ Activity: Students respond by mentioning topics they recall or found challenging.

Learning Point: Prior knowledge activation

Step 2: Review of Geography as a Discipline and Earth’s Movements

Time: 15 minutes

Teaching Skill: Explanation/Questioning

Teacher’s Activity: The teacher leads a discussion on the meaning and scope of Geography, its branches, and importance. The teacher then reviews the Earth’s shape, size, rotation, and revolution, including their effects. The teacher uses focused questions to check understanding and address common misconceptions about seasons or day/night.

Pupils’ Activity: Students participate in the discussion, answer questions, and clarify any doubts.

Learning Point: Geography concepts review

Step 3: Revision of Latitude, Longitude, and Time

Time: 15 minutes

Teaching Skill: Guided Practice/Problem Solving

Teacher’s Activity: The teacher reviews the definitions and uses of latitude and longitude. The teacher then explains local time, standard time, GMT, and the International Date Line. The teacher provides a simple worked example on time calculation, guiding students through the steps.

Pupils’ Activity: Students answer questions, observe the worked example, and attempt similar practice questions.

Learning Point: Time zone calculations

Step 4: Review of Rocks

Time: 10 minutes

Teaching Skill: Classification/Identification

Teacher’s Activity: The teacher reviews the three main types of rocks (igneous, sedimentary, metamorphic), their formation processes, characteristics, and examples. The teacher also highlights their economic importance, using Nigerian examples where applicable.

Pupils’ Activity: Students recall rock types, their features, and contribute examples.

Learning Point: Rock types identification

Step 5: Revision of Weather and Climate Elements

Time: 5 minutes

Teaching Skill: Recall/Explanation

Teacher’s Activity: The teacher guides students to recall the elements of weather and climate and the instruments used to measure each. The teacher clarifies the distinction between weather and climate.

Pupils’ Activity: Students list elements and instruments, and explain the difference between weather and climate.

Learning Point: Weather elements recall

Step 6: Revision Exercises

Time: 5 minutes

Teaching Skill: Application/Assessment

Teacher’s Activity: The teacher distributes short, curriculum-aligned revision exercises or past questions covering various topics from the term. The teacher instructs students to attempt the questions individually or in pairs.

Pupils’ Activity: Students complete the revision exercises.

Learning Point: Knowledge and skills application

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. Define Geography and state two of its branches.
2. Explain the difference between the Earth’s rotation and revolution.
3. If it is 12 noon at 0° longitude, what is the time at 30° East?
4. Name the three main types of rocks and give one example of each.
5. List three elements of weather and the instruments used to measure them.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Key concepts recall

Step 8: Conclusion

Time: 5 minutes

Teaching Skill: Consolidation

Teacher’s Activity: The teacher briefly summarizes the main topics revised, commends students for their participation, and encourages them to continue studying their notes and textbooks for the upcoming examinations. The teacher addresses any final questions.

Pupils’ Activity: Students listen attentively and ask any remaining questions.

Learning Point: Lesson consolidation

Lesson Keywords

• Geography – The study of the Earth’s surface, physical features, climate, and population.
• Rotation – Earth’s spinning on its axis, causing day and night.
• Revolution – Earth’s orbit around the sun, causing seasons.
• Latitude – Imaginary lines parallel to the Equator, measuring north/south.
• Longitude – Imaginary lines from pole to pole, measuring east/west.
• GMT – Greenwich Mean Time, primary time reference.
• Igneous Rocks – Formed from cooled magma/lava.
• Sedimentary Rocks – Formed from compacted sediments.
• Metamorphic Rocks – Transformed by heat/pressure.
• Weather – Short-term atmospheric conditions.
• Climate – Long-term average weather.

Differentiation

For students who are struggling, the teacher can provide simplified revision notes or pair them with stronger students for peer tutoring during revision exercises. Advanced learners can be challenged with higher-order thinking questions or asked to explain complex concepts to their peers, reinforcing their understanding.

Suggested Lesson Videos

For further understanding, students can search on YouTube for: “SS1 Geography First Term Revision” or “Basic Concepts in Geography SS1 Nigeria”.