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Subject: General Science
Semester: 2
Period: 5
Week: 27
School Name:
Teacher’s Name:
Subject: General Science
Grade Level: Grade 3
Date: Week 27
Lesson Duration: 45 minutes
Week & Period: Week 27, Period 5
Topic: States of Matter
Sub-topic: Understanding Solid, Liquid, and Gas
Learning Objectives
By the end of the lesson, students should be able to:
describe the three states of matter: solid, liquid, and gas.
give examples of each state from daily life.
observe changes between states, e.g., melting, freezing, evaporation.
Previous Knowledge
Students already know:
Some objects are hard, some are liquid, and some are invisible like air.
Instructional Materials
Ice cubes, water, kettle for boiling water, balloons, charts showing matter states, worksheets.
Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Ask learners to name examples of solid, liquid, and gas they see every day.
B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Learners’ Activities (Expanded):
- Learners observe ice melting into water and discuss the change from solid to liquid.
- Students boil water to observe the formation of steam and discuss the change from liquid to gas.
- Learners classify examples of solids, liquids, and gases found in daily life, such as:
- Solids: stone, book, chair
- Liquids: water, juice, oil
- Gases: air, steam, helium
- Students record observations in notebooks or worksheets, describing changes between states.
- Optional activity: learners draw diagrams showing solids, liquids, and gases and label examples.
- Hands-on activity: learners experiment with freezing water and condensation of steam to reinforce understanding of physical changes.
Assessment Checks (Expanded):
- Ask learners to identify one example of a solid, liquid, and gas.
- Ask learners to explain processes like melting, freezing, and evaporation in their own words.
- Observe learners during experiments and discussions to ensure understanding of state changes.
Notes (Expanded & Detailed):
- States of matter:
- Solid: definite shape and volume (e.g., ice, stone, book)
- Liquid: definite volume but takes the shape of the container (e.g., water, juice, oil)
- Gas: no definite shape or volume; fills the space available (e.g., air, steam, helium)
- Physical changes in matter:
- Melting: solid → liquid
- Freezing: liquid → solid
- Evaporation: liquid → gas
- Condensation: gas → liquid
- Observing these changes helps learners understand how matter transforms without changing its chemical composition.
- Encourage learners to look for state changes in everyday life, such as ice cubes melting, water boiling, or steam forming while cooking.
C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary:
Recap the three states of matter, examples, and observed changes between states.
Evaluation Method (Expanded)
Exit slip/quiz: Learners list one example of solid, liquid, and gas and describe one change between states.
Teacher will collect slips and provide oral feedback.
Assignment (Expanded)
At home, observe and record one example of matter changing state (e.g., ice melting, water boiling).
Follow-up Activity
Create a chart showing solids, liquids, and gases with examples and changes between states.
Differentiation / Inclusive Strategies
Provide visual demonstrations and real-life examples. Pair learners for observation and recording tasks. Offer simplified explanations for learners needing support.
Teacher’s Reflection (After Class)
What worked well? ___________________________________________
What needs improvement? ____________________________________
Students’ engagement level: ☑ High ☑ Medium ☑ Low