Rocks, Types and Physical Characteristics for Primary 4

Class: Primary 4
Term: Second Term
Week: 5
Age: 9 years
Duration: 45 minutes
Subject: Basic Science and Technology
Theme: Non-Living Things
Curriculum Theme: Living and Non-Living Things
Focal competence: Classifying rocks based on their observable features, uses and importance
Key competencies/values: Collaboration; Creativity and Innovation
Skills:

• Grouping rocks according to shape, colour and size
• Making models of different types of rocks

Previous Lesson: Uses of the different types of human teeth
Topic: Non-Living Things: Rocks
Subject Matter: Meaning of rocks, Types of rocks and their physical characteristics

Specific Objectives

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

Cognitive Domain

• Explain the meaning of rocks.
• Identify different types of rocks by their physical appearance.
• Identify the physical characteristics of rocks.

Psychomotor Domain

• Group rocks according to colour, hardness, lustre and other characteristics.

Reference Materials

The following resources were used in planning this lesson:

• 2025 Revised 9 Years Basic Education Curriculum
• Relevant State Unified Scheme of Work
• Basic Science and Technology for Primary Schools Book 4
• The HeadTeacher Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• Different rock specimens (e.g., granite, sandstone, marble, quartz)
• Pictures/charts of rocks
• Map of Nigeria
• School surroundings

Rationale for the Lesson

This lesson helps pupils understand a fundamental component of the Earth’s crust and its classification as a non-living thing. Learning about rocks develops observational skills and an appreciation for the natural environment. It also lays a foundation for understanding geology and the uses of natural resources.

Prerequisite/Previous Knowledge

Pupils should have a basic understanding of living and non-living things and be able to identify some common non-living objects in their environment.

Lesson Content/Board Summary

Non-Living Things: Rocks

Meaning of Rocks

Rocks are solid, non-living materials that make up the Earth’s outer layer, called the crust. They are found everywhere on Earth, from mountains to riverbeds and even under the soil.

Types of Rocks

There are three main types of rocks:

1. Igneous Rocks: These rocks are formed when hot, molten rock (magma or lava) cools and hardens. Examples include granite and basalt.
2. Sedimentary Rocks: These rocks are formed from layers of sand, mud, and dead plants and animals that are pressed together over a long time. Examples include sandstone, limestone, and shale.
3. Metamorphic Rocks: These rocks are formed when existing igneous or sedimentary rocks are changed by heat, pressure, or chemical reactions deep inside the Earth. Examples include marble and slate.

Physical Characteristics of Rocks

Rocks can be identified by their physical features. Some common characteristics include:

1. Colour: Rocks come in many colours like white, black, grey, brown, red, or a mix of colours.
2. Texture: This refers to how a rock feels to touch or how its grains look. It can be smooth, rough, grainy, or glassy.
3. Hardness: This is how easily a rock can be scratched or broken. Some rocks are very hard (like granite), while others are soft (like chalk).
4. Lustre: This describes how shiny or dull a rock appears when light reflects off its surface. It can be shiny, dull, glassy, or metallic.
5. Size: Rocks can range from tiny pebbles to huge boulders.
6. Shape: Rocks can be round, jagged, flat, or irregular in shape.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Observation, Question and Answer, Group Work, Explanation

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Activating prior knowledge

Teacher’s Activity: The teacher greets the pupils and asks them to name some non-living things they see around the classroom and outside. The teacher then introduces rocks as important non-living things.

Pupils’ Activity: Pupils respond by naming various non-living things like tables, chairs, books, and stones.

Learning Point: Rocks as non-living things

Step 2: Meaning of Rocks

Time: 7 minutes

Teaching Skill: Explanation/Definition

Teacher’s Activity: The teacher explains what rocks are, using simple language and pointing to rock specimens or pictures. “Rocks are solid, non-living materials that make up the Earth’s crust.”

Pupils’ Activity: Pupils listen attentively and observe the rock specimens/pictures.

Learning Point: Definition of rocks

Step 3: Types of Rocks

Time: 8 minutes

Teaching Skill: Classification/Illustration

Teacher’s Activity: The teacher introduces the three main types of rocks (igneous, sedimentary, metamorphic) and briefly explains how each is formed, showing examples for each type if available.

Pupils’ Activity: Pupils listen, observe the different rock types, and ask questions for clarification.

Learning Point: Main rock types

Step 4: Physical Characteristics (Colour & Texture)

Time: 7 minutes

Teaching Skill: Observation/Demonstration

Teacher’s Activity: The teacher displays various rock specimens and guides pupils to observe and describe their colours and textures. “Look at this rock, what colour is it? How does it feel when you touch it?”

Pupils’ Activity: Pupils observe the rocks, touch them, and describe their colours and textures.

Learning Point: Rock colour and texture

Step 5: Physical Characteristics (Hardness & Lustre)

Time: 7 minutes

Teaching Skill: Demonstration/Inquiry

Teacher’s Activity: The teacher demonstrates how to test for hardness (e.g., trying to scratch one rock with another or with a fingernail) and explains lustre. The teacher encourages pupils to describe the lustre of different rocks.

Pupils’ Activity: Pupils observe the hardness test and describe the shininess (lustre) of the rocks.

Learning Point: Rock hardness and lustre

Step 6: Grouping Rocks

Time: 6 minutes

Teaching Skill: Guided Practice/Collaboration

Teacher’s Activity: The teacher divides pupils into small groups and provides each group with a few rock specimens. The teacher then guides them to group the rocks based on shared characteristics like colour, hardness, or texture, as stated in Activity 2.

Pupils’ Activity: Pupils work in groups to observe and group the rocks based on their physical characteristics.

Learning Point: Grouping rocks by features

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. What are rocks?
2. Mention two types of rocks.
3. Name three physical characteristics of rocks.
4. How can you group rocks based on their appearance?

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Understanding rock concepts

Step 8: Note-Taking

Time: 4 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils to copy the essential Board Summary notes on the meaning, types, and characteristics of rocks into their notebooks.

Pupils’ Activity: Pupils copy the notes carefully into their notebooks.

Learning Point: Recording lesson notes

Step 9: Conclusion

Time: 1 minute

Teaching Skill: Consolidation

Teacher’s Activity: The teacher briefly reminds pupils that rocks are important non-living things with unique features that help us identify them. The teacher praises their participation.

Pupils’ Activity: Pupils listen and acknowledge the summary.

Learning Point: Reinforcing rock knowledge

Continuous Assessment/Further Study

Type: Homework

Instruction: Answer the following questions in your notebook:

1. Draw and colour two different types of rocks you saw in class.
2. Find three different small rocks around your home or school compound. Describe their colour, texture, and hardness.
3. Why are rocks considered non-living things?

Lesson Keywords

• Rocks – Solid, non-living materials that make up the Earth’s crust.
• Igneous rocks – Rocks formed from cooled molten rock.
• Sedimentary rocks – Rocks formed from layers of pressed sediments.
• Metamorphic rocks – Rocks changed by heat and pressure.
• Colour – The hue or shade of a rock.
• Texture – How a rock feels or looks on its surface.
• Hardness – A rock’s resistance to scratching.
• Lustre – How shiny or dull a rock appears.

Differentiation

For pupils who need support, provide larger, more distinct rock samples and guide them individually through the observation and grouping activities, focusing on one characteristic at a time. For advanced learners, encourage them to research common uses of different rock types or find more examples of each rock type from their local environment.

Suggested Lesson Videos

For further understanding, search on YouTube for: “Types of Rocks for Kids Primary 4” or “Physical Characteristics of Rocks for Primary School”.

Teacher Guide for Using This Lesson Plan

Before the lesson, gather a variety of rock specimens (e.g., granite, sandstone, marble, quartz if possible) or clear pictures of them. Ensure you have enough samples for group activities. Begin by linking rocks to the broader topic of non-living things. Guide pupils through observing the physical characteristics of rocks systematically, encouraging them to use descriptive words. For the grouping activity, circulate among the groups to provide support and assess their understanding. Allow pupils to copy the Board Summary notes after the main teaching and activities are completed. Emphasize safety when handling rocks, ensuring they are not thrown or used inappropriately. Check for understanding throughout the lesson by asking questions and observing group interactions.