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Class 4 Science
Class 4: Science Notes
Chapter 1: Characteristics and Life Process of Organisms
Lecture 1: Characteristics of Living Things
Lecture 2: Classification of Plants and Animals
Lecture 3: Major Parts of Human and Plant Body and their Functions
Lecture 4: Solved Exercise
Chapter 2: Ecosystem
Lecture 1: What is Ecosystem, Components of Ecosystem and what is Balanced Ecosystem?
Lecture 2: What is Food Chain and Links of Food Chain?
Lecture 3: Ecosystem Exercise
Chapter 3: Human Health
Lecture 1: Communicable/Contagious and Non-Contagious Diseases
Lecture 2: Prevention of Contagious Diseases
Lecture 3: Good Health and Balanced Diet
Lecture 4: Value of Clean Drinking Water
Lecture 5: Human Health Exercise
Chapter 4: Matter and Its Characteristics
Lecture 1: Matter, States Of Matter, and Its Properties
Lecture 2: Arrangement, Movement, and Forces Of Attraction In Solids, Liquids, and Gases
Lecture 3: Physical Properties of Metals
Lecture 4: Matter Exercise
Chapter 5: Forms of Energy and Energy Transfer
Lecture 1: Forms of Energy and Energy Transfer
Lecture 2: Sound Energy, Heat Energy, Electric Energy
Lecture 3: Exercise
Chapter 6: Force and Motion
Lecture 1: Force and Motion
Lecture 2: Gravity
Lecture 3: Friction
Lecture 4: Simple Machines
Lecture 5: Exercise
Chapter 7: Earth and its Resources
Lecture 1: Earth and its Resources
Lecture 2: Earth and its Resources
Lecture 3: Non-Renewable Resources
Lecture 4: Effect of Human Activities on Natural Resources
Lecture 5: Exercise
Chapter 8: Earth's Weather and Climate
Lecture 1: Difference Between Weather and Climate
Lecture 2: Relationship between Geographical Location and Climate
Lecture 3: Exercise
Chapter 9: Solar System and Our Earth
Lecture 1: The Solar System
Lecture 2: “The Moon” and “Ebb and Flow of the Moon”
Lecture 3: Rotational Movement of the Earth
Lecture 4: Lunar Eclipse, Solar Eclipse
Lecture 5: Exercise
Chapter 10: Technology in Everyday Life
Lecture 1: Basic Craft Making
Lecture 2: Uses Of Mobile Phone
Lecture 3: First Aid and First Aid Box
Lecture 4: Exercise
