Tamil Nadu Board of Secondary Education Class 5 Science Syllabus - Free PDF Download
Tamil Nadu Board of Secondary Education Syllabus 2025-26 Class 5: The Tamil Nadu Board of Secondary Education Class 5 Science Syllabus for the examination year 2025-26 has been released by the Tamil Nadu Board, Tamil Nadu Board of Secondary Education. The board will hold the final examination at the end of the year following the annual assessment scheme, which has led to the release of the syllabus. The 2025-26 Tamil Nadu Board of Secondary Education Class 5 Science Board Exam will entirely be based on the most recent syllabus. Therefore, students must thoroughly understand the new Tamil Nadu Board of Secondary Education syllabus to prepare for their annual exam properly.
The detailed Tamil Nadu Board of Secondary Education Class 5 Science Syllabus for 2025-26 is below.
Academic year:
Tamil Nadu Board of Secondary Education Class 5 Science Revised Syllabus
Tamil Nadu Board of Secondary Education Class 5 Science and their Unit wise marks distribution
Tamil Nadu Board of Secondary Education Class 5 Science Course Structure 2025-26 With Marking Scheme
| # | Unit/Topic | Weightage |
|---|---|---|
| 1 | Term - 1 | |
| 1.1 | Organ Systems | |
| 1.2 | Matter and Materials | |
| 1.3 | Energy | |
| 1.4 | Science in Everyday Life | |
| 2 | Term - 2 | |
| 2.1 | Food | |
| 2.2 | Water | |
| 2.3 | Plants | |
| 3 | Term - 3 | |
| 3.1 | Our Environment | |
| 3.2 | Animals | |
| 3.3 | Air | |
| Total | - |
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Syllabus
1: Term - 1
Tamil Nadu Board of Secondary Education Class 5 Science Syllabus
1.1 Organ Systems
- Human Digestive System
- Digestion
- Alimentary Canal
- Digestive organs
- Human Respiratory System
- Respiratory System
- Exchange of Gases in Lungs
- Significance of Respiration
- Blood Circulatory System in Human
- Blood Circulatory System
- Blood vascular system
- Blood Composition
- Blood Coagulation (Clotting)
- Human Heart
- Structure of the Heart
- Layers of the Heart Wall
- Chambers of the Heart
- Valves of the Heart
- Pathway of Blood through the Heart
- Blood Vessels
- Blood Vessels: Structure and Functions
- Capillaries
- Circulation of Blood in the Heart (Functioning of Heart)
- Blood Circulation through Heart / Functioning of Heart
- Experiment
- Blood
- Introduction
- Components of Blood
- Functions of Blood
- Human Excretory System
- Introduction
- Human Excretory System Organs
- Excretion in Humans
- Mechanism of Excretion in Humans
- Dialysis
- Human Nervous System
- Introduction
- Components of Nervous System
- Neuron
- Need of Nervous System
- Major Division of the Nervous System
- The major division of The Nervous System
- Central Nervous System (CNS)
- Peripheral nervous system (PNS)
- Somatic Nervous System
- Autonomic Nervous System
- Components of the nervous system at a glance
- The Human Brain - Forebrain
Forebrain:
- Olfactory lobes
- Cerebrum
- Diencephalon
- The Spinal Cord
- Spinal Cord
- T. S. of spinal cord
- Functions of the spinal cord
- Peripheral Nervous System (PNS)
- Peripheral Nervous System
- Types of PNS
1.2 Matter and Materials
- Various uses of changes in physical state
- States of Matter
- Three States of Matter
- Comparison of Solids, Liquids, and Gases
- The Solid State
- The Solid State of Matter
- Characteristics of Solids
- The Liquid State
- The Liquid State of Matter
- Characteristics of Liquids
- The Gaseous State
- The Gaseous State of Matter
- Characteristics of Gases
- Fibre
- Plant Fibres: Cotton
- Plant Fibre: Jute Fibre
- Fibre to Yarn to Fabric
- Man-made Fibre: Synthetic Fibres
- Grain
- Household Goods
- Buoyancy Force (Upthrust Force)
- Introduction
- Experiment 1
- Experiment 2
- Water - a Universal Solvent
- Universal Solvent
- Experiment: To show that ordinary tap water contains dissolved solids.
- Importance of dissolved salts in water.
- Air dissolved in water.
- Experiment: To show that tap water contains dissolved gases (air).
- Importance of air dissolved in water.
- Density of the Fluid
1.3 Energy
- Energy
- Introduction to Energy
- Commercial Unit of Energy
- Mechanical Energy
- Introduction
- Experiment
- Potential Energy (U)
- Introduction to Potential Energy
- Expression for Potential Energy
- Kinetic Energy (K)
- Introduction to Kinetic Energy
- Expression for Kinetic Energy
- Forms of Energy
- Electrical Energy
- Introduction
- Applications of Electrical Energy
- Storage of Electrical Energy
- Transformation of Energy
- Introduction
- Energy Transfer in The Water Cycle
1.4 Science in Everyday Life
- Scientists from Tamil Nadu
- Changes-Physical and Chemical
- Chemical and Physical Changes
- Experiment
- Classification of Change: Reversible and Irreversible Changes
- Wastes Generated in Our Environment
- Disposal of Waste Water
- Waste Water
- Effective Methods to Reduce Pollution
- Five R’s of Waste Management
2: Term - 2
Tamil Nadu Board of Secondary Education Class 5 Science Syllabus
2.1 Food
- Food and Its Types
- Spoilage of Food
- Causes and Prevention of Food Spoilage
- Effects of Storing Food Improperly
- Food and Micro-organisms
- Methods of Food Preservation
- Methods of Food Preservation
- Methods of Food Protection
- Obesity and Its Prevention
- Body Mass Index
- Disease
- Introduction
- Identification of disease
- Categories of Disease
- Categories of Disease
- Extent of occurrence
- Endemic diseases
- Epidemic diseases
- Pandemic diseases
- Sporadic diseases - Communicability: Communicable or Infectious diseases & Non- Communicable or Non-Infectious diseases
- Kinds of pathogens
- Kinds of transmitting agents
- Congenital diseases and acquired diseases
- Other types of diseases
- Infectious diseases
- Hereditary diseases
- Physiological diseases
- Deficiency diseases
- Causes of Disease
- Diseases Due to Deficiency of Proteins
- Diseases Due to Deficiency of Vitamin
- Diseases Due to Deficiency of Minerals
- A Balanced Diet
- Kitchen Safety
2.2 Water
- Water: Our Lifeline
- Introduction
- Importance of Water for Sustaining Life
- Sources of Water
- Biogeochemical Cycles (Nutrient Cycles)
- Availability of Water
- Water Management (Conservation of Water)
- Waste Water Management
- Desalination of Sea Water
- Contamination of Water and Water Borne Diseases
- Waterborne diseases
- Contamination of Water
- Prevention of Waterborne Diseases
- Waterborne Diseases Caused by Bacteria
- Waterborne Diseases Caused by Bacteria:
- Diarrhoea
- Dysentery (Shigellosis)
- Typhoid Fever Bacteria (Salmonella)
- Cholera
- Waterborne Diseases Caused by Virus
- Waterborne Diseases Caused by Virus
- Hepatitus A
- Hepatitus E
- Vector Borne Diseases
- Vector
- Vector Borne Diseases: Mosquitoes, Cockroaches and Rats
- Malaria
- Elephantiasis (filariasis)
- Yellow fever
- Dengue
- Control of mosquitoes:
- Spraying
- Elimination of breeding places
- Spraying on stagnant water
- Biological control
- Diseases Transmitted by Animals
2.3 Plants
- Plant Forms and Functions
- Mode of Reproduction in Plant
- Agents of Pollination
- Fruit
- Classification of Seeds
- Dispersal of Seeds
- Germination in Some Common Seeds
- Types of Soil
- Friends of Farmer
3: Term - 3
Tamil Nadu Board of Secondary Education Class 5 Science Syllabus
3.1 Our Environment
- Farms
- Manuring (Biomanuring)
- Vermicomposting
3.2 Animals
- Mode of Reproduction in Animal
- Mode of Reproduction in Animal:
- Asexual reproduction
- Sexual reproduction
- Sexual Reproduction in Animals
- Embryo Formation in Viviparous and Oviparous Animals - Young Ones to Adults
- Animal Welfare Organisations
3.3 Air
- Air Around Us
- Atmosphere and Its Layers
- Atmosphere
- Layers of Atmosphere
- The Role of Atmosphere In Climate Control
- Importance of Air
- Airborne Diseases
- Airborne Diseases Caused by Bacteria
- Airborne Diseases Caused by Virus
- Airborne Diseases Caused by Virus
- Hepatitus A
- Hepatitus E
