Force

Grade 4 · General Science

Semester 1 | Period 2 | Week 9

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Subject: General Science

Semester: 1

Period: 2

Week: 9

School Name:
Teacher’s Name:
Subject: General science
Grade Level: Grade 4
Date: Week 9
Lesson Duration: 45 minutes
Week & Period: Week 9, Period 2
Topic: Force
Sub-topic: Two Groups of Forces – Field Forces

Learning Objectives
By the end of the lesson, students should be able to:
State the meaning of field force
Give examples of field forces such as gravitational, magnetic, and electrostatic
Demonstrate simple field force activities

Previous Knowledge
Students already know about contact forces from the previous lesson

Instructional Materials
Charts showing magnets attracting objects, apple falling from tree, and balloons attracting hair
Objects like magnets, small nails, balloons
Flashcards with field force examples

Lesson Development – ABC Model
A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Teacher drops a ball and asks: “Why did the ball fall?” Learners respond. Teacher introduces field forces.

B – Building Knowledge (Main Lesson Body)
Time: 25–30 minutes
Learners’ Activities (Expanded):

  • Learners listen attentively as the teacher explains that field forces act without objects touching each other.
  • Learners observe practical demonstrations:
    • Gravity: Teacher drops a ball to show it falls toward the earth.
    • Magnetism: Teacher uses a magnet to attract iron nails or pins.
    • Electrostatic force: Teacher rubs a balloon on hair or cloth and shows it attracting small pieces of paper.
  • Learners discuss examples of field forces they have seen in daily life:
    • Gravity: apple falling from a tree, water flowing downhill
    • Magnetism: fridge magnets holding paper, magnetic toys
    • Electrostatic: rubbing a balloon and sticking it on a wall, static cling of clothes
  • Learners participate in simple hands-on demonstrations:
    • Drop small objects to observe gravity
    • Use magnets to attract paper clips
    • Rub balloons on hair or cloth to observe electrostatic attraction
  • Learners record three examples of field forces in their notebooks and describe what happens.

Assessment Checks:

  • Teacher asks: “What is gravity?” (Expected answer: The force that pulls objects toward the earth)
  • Teacher asks: “Which force makes magnets attract iron nails?” (Expected answer: Magnetic force)
  • Teacher asks learners to give one example each of gravity, magnetic, and electrostatic forces from their daily life.
  • Teacher observes learners during demonstrations to ensure understanding of how field forces act without contact.

Notes (Expanded & Detailed):

  • Field forces: Forces that act from a distance without physical contact.
  • Types of field forces and examples:
  1. Gravity: Pulls objects toward the earth. Example: falling ball, water flowing downhill, apple falling from a tree.
  2. Magnetic force: Attraction or repulsion between magnets and magnetic objects. Example: magnet attracting nails or pins, fridge magnets.
  3. Electrostatic force: Attraction or repulsion between charged objects. Example: rubbed balloon attracting small paper pieces, static cling of clothes.
  • Field forces are everywhere and can act even when objects are not touching. Understanding them helps explain natural and everyday phenomena.

Assignment/Homework:

  1. Draw one example each of gravity, magnetic force, and electrostatic force and label them.
  2. List three activities at home or school where you have seen field forces in action.
  3. Using a magnet and some small iron objects at home, observe how the magnet attracts them and write a short description of what happens.

C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary: Teacher revises the three field forces. Learners give examples of gravity, magnetism, and electrostatic force.

Evaluation Method (Expanded):
Exit slip/quiz: Learners write two examples of field forces. Teacher will collect slips and provide oral feedback.

Assignment (Expanded):
Draw one example each of gravity, magnetism, and electrostatic force.

Follow-up Activity:
Learners observe at home one example of field force and report in the next lesson.

Differentiation / Inclusive Strategies
Teacher demonstrates with real objects for better understanding. Learners with difficulty writing can draw.

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