Composition of Matter

Grade 5 · General Science

Semester 2 | Period 5 | Week 26

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Subject: General Science

Semester: 2

Period: 5

Week: 26

School Name:
Teacher’s Name:
Subject: General science
Grade Level: Grade 5
Date: Week 26
Lesson Duration: 45 minutes
Week & Period: Week 26, Period 5
Topic: Composition of Matter
Sub-topic: Elements

Learning Objectives
By the end of the lesson, students should be able to:

  1. Define an element.
  2. Give examples of elements such as iron, oxygen, and hydrogen.
  3. Recognize and write symbols of common elements.
  4. State the natural occurrence and importance of elements.

Previous Knowledge
Students already know that matter is made up of tiny particles.

Instructional Materials
Periodic table chart, flashcards with element names and symbols, samples of iron nail, water, oxygen representation (diagram).

Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher writes H, O, Fe on the board and asks learners: Do you know what these stand for?

B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes

Learners’ Activities (Expanded):

  1. Introduction and Discussion:
  • Teacher introduces the topic: “Everything around us is made of matter. Some matter is very simple and cannot be broken into anything simpler. These are called elements.”
  • Learners discuss in pairs what they think an element might be.
  1. Definition and Explanation:
  • Teacher explains: An element is a pure substance that cannot be broken down into simpler substances by chemical means.
  • Teacher shows common examples in the classroom and environment: oxygen in air, iron nails, hydrogen in water, gold in jewelry, copper wires.
  1. Symbols of Elements:
  • Teacher introduces symbols of elements using flashcards:
    • H – Hydrogen
    • O – Oxygen
    • Fe – Iron
    • C – Carbon
  • Learners practice writing the symbols on mini whiteboards or notebooks.
  • Teacher explains that some symbols come from Latin names (e.g., Fe from Ferrum for iron, Na from Natrium for sodium).
  1. Practical Activity – Matching Game:
  • Learners are given cards with element names and cards with symbols.
  • In groups, they match the element name to its correct symbol.
  • Teacher checks and corrects where necessary.
  1. Examples to Reinforce Learning:
  • Elements found in air: Oxygen (O), Nitrogen (N)
  • Elements found in water: Hydrogen (H), Oxygen (O)
  • Elements found in soil: Iron (Fe), Calcium (Ca)
  • Elements in everyday items: Copper (Cu) in wires, Gold (Au) in jewelry
  1. Real-Life Application Discussion:
  • Learners discuss why elements are important:
    • Oxygen is needed for breathing
    • Iron is used in building houses and making tools
    • Hydrogen is part of water, which we drink

Assessment Checks:

  • Teacher asks oral questions:
    • “What is an element?”
    • “Give two examples of elements.”
    • “What does H stand for?”
    • “What is the symbol for iron?”
  • Learners write the symbols for three elements they see in the classroom.
  • Peer assessment: Groups check each other’s matching game answers.

Notes (Expanded & Detailed):

  • Element: A pure substance that cannot be broken down into simpler substances by chemical means.
  • Symbols: One or two letters representing each element. First letter is always capitalized. Examples: H – Hydrogen, O – Oxygen, Fe – Iron. Some symbols come from Latin: Fe (Ferrum), Na (Natrium).
  • Occurrence: Elements occur naturally in air, water, soil, and rocks.
  • Importance of Elements:
    • Oxygen – breathing, combustion
    • Iron – building, tools
    • Hydrogen – part of water
    • Carbon – fuels, life processes
  • Key Idea: Elements are the building blocks of all matter, and understanding their symbols helps us identify substances in science and everyday life.

Homework/Assignment:

  • Make a table of 5 elements you can find at home, write their symbols and where they are found.
  • Draw a simple diagram showing hydrogen and oxygen atoms forming a water molecule (Hâ‚‚O).

C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Teacher summarizes the meaning of an element, its examples, symbols, and importance. Learners repeat symbols aloud.

Evaluation Method (Expanded):
Exit slip/quiz: Learners answer: 1. Define element. 2. Write the symbols for oxygen and iron. 3. State one use of elements. Teacher collects slips and provides oral feedback.

Assignment (Expanded): Learners should write the names and symbols of 10 elements at home.

Follow-up Activity: Learners will observe and list 3 objects at home and find out at least one element they are made of.

Differentiation / Inclusive Strategies
Teacher uses visual aids, games, and repetition to support slower learners. Peer support is encouraged. Stronger learners may be asked to spell and explain additional element names.

Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low