Tamil Nadu Board of Secondary Education Class 5 Science Syllabus - Free PDF Download
Tamil Nadu Board of Secondary Education Syllabus 2026-27 Class 5: The Tamil Nadu Board of Secondary Education Class 5 Science Syllabus for the examination year 2026-27 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 2026-27 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 2026-27 is below.
Academic year:
Tamil Nadu Board of Secondary Education Class 5 Science Revised Syllabus
Tamil Nadu Board of Secondary Education Class 5 Science Course Structure 2026-27 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
- Key Points: Respiratory System
- Blood Circulatory System
- Circulation of Blood in the Heart (Functioning of Heart)
- Introduction
- Experiment
- Key Points: Circulation of Blood in the Heart
- 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
- Need of Nervous System
- Key Points: Human Nervous System
- Major Division of the Nervous System
- Peripheral Nervous System > Somatic Nervous System
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
- Concept of Energy
- Definition: Energy
- Key Points: Energy
- Forms of Energy > Mechanical Energy
- Definition: Mechanical Energy
- Mechanical Energy > Potential Energy (U)
- Definition: Mechanical Energy
- Definition: Potential Energy
- Formula: Gravitational Potential Energy
- Key Points: Potential Energy
- Mechanical Energy > Kinetic Energy (K)
- Definition: Kinetic Energy
- Formula: Kinetic Energy
- Definition: Translational Motion
- Definition: Translational Kinetic Energy
- Definition: Rotational Motion
- Definition: Rotational Kinetic Motion
- Definition: Vibrational Motion
- Definition: Vibrational Kinetic Energy
- Forms of Energy > Light Energy
- Definition: Light Energy
- Forms of Energy > Electrical Energy
- Definition: Electrical Energy
- Forms of Energy > Chemical Energy
- Definition: Chemical Energy
- Conversion of Energies
- Key Points: Conversion of Energies
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
- Diseases Transmitted by Animals
2.3 Plants
- Plant Forms and Functions
- 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
- 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
