Science SSLC (English Medium) Class 6 Tamil Nadu Board of Secondary Education Syllabus 2025-26

• Measurement
• The need for measurement in daily life

• Use of a metre ruler to measure length

1. Description of a metre ruler
2. Measurement of length of an object with a metre ruler
3. Parallax Error

• Use of measuring tape to measure length

1. Description of a measuring tape

• Introduction
• The Old Kilogram Standard
• The New Kilogram Standard
• Measuring Atoms & Molecules: Atomic Mass Unit (amu)

• The Foundation of Time
• The Revolutionary Solution: Cesium Atomic Clocks
• Real World Applications

• Introduction to Scientist
• Motion and Rest

• Introduction

• Introduction
• Definition: Contact Force
• Definition: Non-Contact Force
• Characteristics
• Understanding Contact Forces
• Understanding Non-Contact Forces
• Experiment
• Significance

• A Force can change the State of motion
• Force can change the shape of an object
• Stops or tries to stop a moving body
• Changes or tries to change the direction of motion of a moving body
• Like parallel forces effect
• Unbalanced forces effect
• Unlike parallel forces effect

• Introduction
• Definition: Linear Motion
• Definition: Non-Linear Motion
• Characteristics
• Linear Motion
• Non-Linear Motion
• Significance

• Experiment 1
• Experiment 2
• Experiment 3
• Experiment 4
• Substance (Matter)
• Physical Nature of matter
• Chemical properties

• Characteristics of particles or matter
• Classification of Matter and Particle
• Experiment

• Three States of Matter
• Comparison of Solids, Liquids, and Gases

• Pure substance
• Characteristics of Pure substance
• Examples of Pure Substance

• Experiment 
• Elements

• Introduction
• Experiment 1
• Experiment 2

• Introduction
• Separation of Unwanted Substances from Mixtures
• Activity

• Introduction
• Experiment

• Types of Root
• Experiment 1
• Experiment 2
• Experiment 3

• Introduction
• The Importance of Hygiene for Health and Well-being

1. Macro-minerals
2. Trace minerals (micro-minerals)

• Introduction of Microorganisms
• Types of Microorganisms
• Classification of Microorganisms
• Experiment
• Nature of microorganisms
• Growth of microorganisms

• Introduction to Software 
• Need of Software 

• Sources of Heat
• Methods of Heat Energy Transfer
• Various Forms of Energy

• Introduction
• Experiment: 1
• Experiment: 2

• Introduction
• Experiment
• Thermal Equilibrium
• Heat Transfer and Thermal Equilibrium
• States of Matter and Energy Transformation 
• Definition: Temperature
• Heat Transfer and Units of Energy and Temperature 

• Introduction
• Hydroelectricity and its Production
• Application of Hydroelectric Energy

• Nuclear Energy
• Production of electricity from Nuclear energy
• Atomic power stations in India

• Introduction of Electric Cell
• Types of Electric Cells
• Experiment

• Concept of Electric Circuit
• Working
• Circuit Diagram
• Experiment
• Joule’s Law of Heating and Electrical Power

• Components of Electric Circuits
• Experiment 

• Introduction
• Conductors
• Insulators
• Semiconductors
• Table
• Concept of Electrical Conductivity
• Classification of Semiconductors

• Chemical and Physical Changes
• Experiment

• Introduction
• Experiment

• Mass Percentage or Percentage by Mass (w/w) and Volume Percentage or Percentage by Volume (v/v)
• Grams Per Litre (g/L) and Molarity (M)
• Formality (F) and Molality (m)
• Normality (N) and Mole Fraction (χ)
• Parts per Million (ppm)
• Examples

• Introduction
• Types of Chemical Reaction
• Experiment

• Atmosphere
• Layers of Atmosphere
• The Role of Atmosphere In Climate Control

• Introduction
•  Uses of Gases in Air

• Characteristics of Cells
• Types of Cells
• Difference between Prokaryotic and Eukaryotic cells

• Plant Cell
• Animal Cell
• Difference between Plant Cell and Animal Cell

• Cell Inclusion
• Granule
• Vacuole
• Functions of Vacuole

• Introduction
• Parts of the human skeletal system

• Introduction
• Types of Muscles
• Activity

• Digestion
• Alimentary Canal 
• Digestive organs

• Respiratory System
• Exchange of Gases in Lungs
• Significance of Respiration

1. Breathing 
2. Gaseous transport
3. Tissue respiration
4. Cellular respiration

• Blood Circulatory System
• Blood vascular system
• Blood Composition
• Blood Coagulation (Clotting)

• 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: Structure and Functions
• Capillaries

• Blood Circulation through Heart / Functioning of Heart
• Experiment

• Introduction
• Components of Blood

• Heartbeat Rate
• Heart Sounds
• Pulse
• Pulse Rate

• Introduction
• Components of Nervous System
• Neuron
• Need of Nervous System

Forebrain: 

1. Olfactory lobes
2. Cerebrum
3. Diencephalon

• Spinal Cord 
• T. S. of spinal cord
• Functions of the spinal cord

Human Endocrine System

• Properties of Hormones 
• Mechanism of hormone action 

• Introduction
• Human Excretory System Organs
• Excretion in Humans
• Mechanism of Excretion in Humans
• Dialysis

• Dial-up Connection
• Broadband Connection
• Wireless Connection

• Classification of Magnets
  1) Natural Magnet
  2) Artificial Magnet

• Introduction
• Experiment

• Introduction
• Importance of Water for Sustaining Life

• Introduction
• Water Cycle

• Various uses of Water
• Scarcity of Water

• Introduction
• Types of Chemical Reaction
• Experiment

• Introduction
• Types of Soaps
• Synthetic Detergents
• Experiment

• Detergent and Its Working
• Experiment

• Introduction of Fertilizers
• Harmful Effects of Chemical Fertilizers
• Protection of crops
• Steps for Storing Grain
• Steps to Protect Grain from Damage

• Introduction
• Diversity in Animal Food
• Reproduction in Animals
• Classification of Animals Based on Habitat

• Trophic Level
• Pyramid of Energy

• Pollution
• Types of Pollution

• Introduction to Software 
• Need of Software