Biology Videos

Biology Videos

Importance Of Biology

Characteristics Of Living Things

Collecting Specimens

Differences Between Plants And Animals

Cell Organelles – Nucleolus Mitochondria And Ribosomes

Cell Organelles – Lysosomes And Centrioles

Cell Organelles – Endoplasmic Reticulum And Golgi Apparatus

Cell Organelles – Chloroplast And Vacuoles

Temporary Slides

Estimating Size Of Cells

Cell Specialization

Organ And Organ Systems

Comparison Between Animal And Plant Cells

Cell Physiology

Structure And Properties Of Cell Membranes

Properties Of Cell Membranes

Movement Of Substances In And Out Of Cells

Definition Of Diffusion

Factors Affecting Diffusion

Role Of Diffusion In Living Things

Definition And Demonstration Of Osmosis

The Process Of Osmosis

Plant Water Relations – Osmotic Pressure

Factors Affecting Osmosis

Role Of Osmosis In Living Cells

Water Relations In Animal Cells

Water Relations In Plant Cells

Water Relations In Plant – Plasmolysis

Water Relations In Plant – Deplasmolysis

Wilting In Plants

Water Relations In Plant – Turgor Pressure

Demonstration Of Osmosis Using Plant Tissues

Meaning Importance And Types Of Nutrition

Autotrophism – Plants Making Their Own Food

Adaptation To Leaf To Photosynthesis

Structure And Function Of The Chloroplast

The Process Of Photosynthesis

Factors Influencing Photosynthesis

Mechanism Of Active Transport

Factors That Limit Photosynthesis

Testing For Starch In A Leaf

Necessity For Carbon (iv) Oxide In Photosynthesis

Necessity For Light In Photosynthesis

Necessity For Chlorophyll In Photosynthesis

Investigating Gas Produced During Photosynthesis

Disaccharides And Polysaccharides

Monosaccharides – Chemicals Of Life

Lipids – Chemicals Of Life


Enzymes – Biological Catalysts

Food Test For Starch

Food Test For Reducing Sugars

Food Test For Non-reducing Sugars

Food Test For Lipids

Food Test For Proteins

Food Test For Vitamin C

Transport In Plants

Transport In Plants 2

Plant Anatomy – The Root

Plant Anatomy – The Stem

Absorption Of Water And Mineral Salts

Transpiration In Plants

Internal Factors Affecting Transpiration

Environmental Factors Affecting Transpiration

Forces Involved In The Movement Of Water Up A Plant

Transport In Animals

Transport In Insects

Single And Double Circulation

The Mammalian Circulatory System

The Structure And Function Of The Mammalian Heart – External Structure

The Internal Structure Of The Mammalian Heart And Blood Flow

The Pumping Mechanism Of The Heart

Blood Vessels – Arteries Veins And Capillaries

Disease And Defects Of The Circulatory System

Structure And Function Of The Blood

Blood Groups And Blood Transfusion

Lymphatic System

Immune Response

Allergic Reactions And The Organ Transplant

Introduction To Gasesous Exchange

Gasesous Exchange In Plants – The Leaf And The Stomata

Gasesous Exchange In Through The Stem And Roots

Gasesous Exchange In Animals – Introduction

Gasesous Exchange In Terrestrial Insects

Gasesous Exchange In Bony Fish

Gasesous Exchange In Amphibians

Gasesous Exchange In Mammals

Regulation Of Breathing And Factors Affecting The Breathing Rate

Diseases Of The Respiratory System

Importance Of Respiration

The Mitochondria – Cell Organelle

Types Of Respiration

Oxygen Debt

Application Of Anaerobic Respiration

Respiratory Substances Ant Respiratory Quotients

Factors Affecting The Rate Of Respiration

Introduction To Excretion And ostasis

Excretion In Plants

Plant Excretory Products Of Economic And Medicinal Importance

Excretion And ostasis In Unicellular Organisms

Mammalian Excretory Products

Structure And Functions Of The Mammalian Skin

Structure And Functions Of The Mammalian Kidney And The Urinary System

Structure And Functions Of The Mammalian Nephron

Urine And Quantity

Kidney Diseases And Disorder

Structure And Functions Of The Mammalian Liver

Diseases And Disorder Of The Liver

Principles Of ostasis

Importance Of Classification

Principles Of Classification

Binomial Nomenclature

Kingdom Monera

Kingdom Protoctista

Kingdom Fungi

Kingdom Plantae

Division Bryophyta

Division Pteridophyta

Division Spermatophyta

Subdivision Gymnospermatophyta

Subdivision Angiospermaphyta

Kingdom Animalia

Phylum Arthropoda

Class Pisces

Class Amphibia

Class Mammalia

Class Reptilia

Class Aves

Identification Of Organisms

Dichotomous Key

Ecology – Introduction

Factors Affecting An Ecosystem – Abiotic Factors

Factors Affecting An Ecosystem – Biotic Factors

Nitrogen Cycle

Flow Of Energy In An Ecosystem


Population Estimation Methods

Adaptations Of Plants To Various Habitats

Air Pollution

Water Pollution

Land Pollution

Radioactive Emission

Human Diseases – Bacterial Diseases

Human Diseases – Protozoan Diseases

Cell Division And The Chromosomes

Plant Growth And Development

Types Of Cell Mitosis

Types Of Cell Meiosis

Asexual Reproduction – Fission

Spore Formation In Fungi

Budding In Yeast

Sexual Reproduction In Plants And Animals – Flowering Plant

Pollination In Flowering Plants

Seed And Fruit Development

Classification Of Fruits

Placentation In Plants

Dispersal Of Seeds And Fruits

Sexual Reproduction In Animals

Reproduction In Mammals

Human Male Reproductive System

Human Female Reproductive System

Gamete Formation

Fertilisation And Gestation

The Role Of Hormones During Pregnancy

The Role Of Hormones In Menstrual Cycle

Secondary Sexual Characteristics

Sexually Transmitted Infections

Advantages And Disadvantages Of Sexual And Asexual Reproduction

Introduction To Growth And Development

Growth And Development In Plants Seed Structure

Seed Dormancy

Seed Germination

Growth Regions In Plants

Primary Growth In Plants

Secondary Growth In Plants

Role Of Growth Hormones In Plants

Growth And Development In Animals – Introduction

Metamorphosis In Insects

Role Of Growth Hormones In Insects

Chemistry Videos

Introduction To Chemistry

Definition And Role Of Chemistry In The Society

Career Opportunities Related To Chemistry

Drug Use And Drug Abuse

The Typical School Laboratory

Laboratory Apparatus For Measuring Volume

Laboratory Apparatus For Measuring Mass

Laboratory Apparatus For Measuring Temperature

Laboratory Apparatus For Measuring Time

Other Laboratory Apparatus

The Bunsen Burner

Types Of Bunsen Burner Flames

Experiment To Find Out The Hottest Part Of Non Luminous Flame

Laboratory Safety Rules

Chemistry – Introduction

Mixtures – Introduction

Separation Of Solid Solid Mixtures

Separation Of Solid Liquid Mixtures – Decantation

Separation Of Solid Liquid Mixtures Filtration

Separation Of Solid Liquid Mixtures – Evaporation To Dryness

Separation Of Solid Liquid Mixture Filtration And Evaporation

Separation Of Solid Liquid Mixture – Crystallisation

Separation Of Solid Liquid Mixture – Simple Distillation

Separation Of Immiscible Liquid-liquid Mixtures

Separation Of Liquid Liquid Mixtures – Fractional Distillation

Solvent Extraction Method Of Separation of Mixtures

Chromatography – Separation Of Colours From A Dye

Effect Of Heat On Substances

Kinetic Theory Of Matter

Criteria Of Purity – Heating Pure Substances

Criteria Of Purity – Cooling Pure Substances

Criteria Of Purity – Heating Impure Substances2

Criteria Of Purity – Cooling Impure Substances

Comparison Between Heating And Cooling Curves Of Pure And Impure Substances

Applications Of Knowledge Of Purity

Temporary Physical Change

Temporary Chemical Changes

Permanent Chemical Changes

Constituents Of Matter

Constituents Of Matter Compound

Chemical Symbols

The Three States Of Matter – Chapter Review

Acids, Bases And Indicators

Flower Extract Indicator

Commercial Indicators

Universal Indicators And The Ph Scale

Chemical Properties Of Acids Reaction With Metals

Chemical Properties Of Acids Reaction With Carbonates And Hydrogen Carbonates

Chemical Properties Of Acids Reaction With Bases

Physical Properties Of Acids And Bases

Applications Of Acids And Bases

Applications And Uses Of Bases

Flower Extract Indicators

Air And Its

Percentage Of Air That Supports Combustion

Percentage Of Air That Is Used During Rusting

Percentage Of Air Used In Smouldering Of Phosphorus

Determining The Presence Of Carbon (iv) oxide In Air

Determining The Presence Of Water Vapour In Air

Fractional Distillation Of Liquefied Air

Uses Of Oxygen

Rusting Of Metals – Chapter Review

Water And Hydrogen

Burning Of Organic Substances In Air

Reaction Of Metals With Water

Reaction Of Metals With Steam

Reactivity Series Of Metals

Physical Properties Of Hydrogen

Chemical Properties Of Hydrogen Reaction Of Hydrogen With Copper Ii Oxide

Chemical Properties Of Hydrogen Reducing Property Of Hydrogen

Chemical Properties Of Hydrogen Burning Of Hydrogen In Air

Uses Of Hydrogen

Structure Of The Atom And The Periodic Table Introduction

What Is An Atom

The First Twenty Elements Of The Periodic Table

Energy Levels And Electron Arrangement

Building Atoms Of Elements

Atomic Number And Mass Number

The Periodic Table


Relative Atomic Mass R.a.m.

Ion Formation



Oxidation And Oxidation Number

Writing Chemical Formulae


Writing Of Chemical Equations

Chemical Families – Introduction

Alkali Metals Or The Group 1 Metals

Physical Properties Of Alkali Metals

Chemical Properties Of Alkali Metals Reaction With Air

Chemical Properties Of Alkali Metals Reaction Of Water

Chemical Properties Of Alkali Metals Reaction Of Chlorine

General Properties Of Alkali Metals

Uses Of Alkali Metals And Their Compounds

Alkaline Earth Metals

Physical Properties Of Alkaline Earth Metals

Chemical Properties Of Alkaline Earth Metals Reaction With Air

Chemical Properties Of Alkaline Earth Metals Reaction With Water

Chemical Properties Of Alkaline Earth Metals Reaction With Steam

Chemical Properties Of Alkaline Earth Metals Reaction With Chlorine

Chemical Properties Of Alkaline Earth Metals Reaction With Dilute Acids Acids

Ions And Formulae Of Some Compounds Of Alkaline Earth Metals

Uses Of Alkaline Earth Metals And Their Compounds

The Halogens

Physical Properties Of Halogens

Chemical Properties Of Halogens Reaction With Metals

Chemical Properties Of Halogens Reaction With Water

Uses Of Halogens

The Noble Gases

Some Uses Of The Noble Gases

Trends In Period 3 Elements

Chemical Properties Of Period 3 Elements Reaction With Oxygen

Chemical Properties Of Period 3 Elements Reaction With Water

Chemical Properties Of Period 3 Elements Reaction With Acids

Structure And Bonding – An Overview

Giant Ionic Structures

Covalent Bond

Co-ordinate Bond

Hydrogen Bonding

Giant Atomic Structures

Metallic Bonds

Types Of Bonds Across Period 3

Chapter Review On Covalent Bonds

Salts – Methods Of Preparation And Uses

Types Of Salts

Solubility Of Salts In Water

How To Obtain Crystals Of Salt From A Solution

Preparation Of Soluble Salts Reaction Of Acids With Metals

Preparation Of Soluble Salts Reaction Of Acids With Bases

Preparation Of Soluble Salts Reaction Of Acids With Metal Carbonates And Hydrogen Carbonates

Preparation Of Insoluble Salts Double Decomposition Or Precipitation Reactions

Preparation Of Salts Direct Combination Of Elements

Uses Of Some Salts

Exposing Salts To The Atmosphere

Action Of Heat On Salts Carbonates

Action Of Heat On Salts Nitrates

Action Of Heat On Salts Suphates

Chapter Review Of Conductors, Nonconductors And Electrolysis

Conductors And Non Conductors

Electrical Conductivity Of Substances In Aqueous State

Electrical Conductivity Of Molten Substances


Applications Of Electrolysis

Chapter Review Of The Topic Carbon And Its Compounds

Carbon And Some Of Its Compounds Introduction

Allotropes Of Carbon

Burning Carbon In Air

Heating A Mixture Of Carbon And Copper (ii) Oxide

End Of Reactivity Series

Reaction Of Carbon With Concentrated Sulphuric(vi)and Concentrated Nitric(v) Acids

Physical Properties Of Carbon (iv) Oxide

Chemical Properties Of Carbon (iv) Oxide

Uses Of Carbon (iv) Oxide

Physical Properties Of Carbon (ii) Oxide

Chemical Properties Of Carbon (ii) Oxide

Other Sources Of Carbon (ii) Oxide

Carbonates And Hydrogen Carbonates

Extraction Of Sodium Carbonate From Trona

The Solvay Process

Effects Of Carbon (iv) Oxide And Carbon (ii) Oxide On The Environment

The Carbon Cycle

Carbon And Its Allotropes – Chapter Review

Gas Laws

Gas Laws – Boyles Law

Examples On Boyles Law

Gas Laws – Charles Law

Examples On Charles Law

Combined Gas Law

Examples On Combined Gas Law

Graham’s Law Of Diffusion

Examples On Grahams Law Of Diffusion

The Mole As A Basic Unit And Relative Mass

Examples On Relative Atomic And Formula Mass

Molecules And Moles

Examples On Molecules And Moles

Relationship Between Relative Atomic Mass And Moles

Relationship Between Relative Formula Mass And Moles

Empirical Formula

Examples On Empirical Formula

Molecular Formula

Molar Solutions – Mass Of 1 Mole Of Substance Dissolved In 1 Litre Of Water

Examples On Molar Solutions

Preparation Of Molar Solutions

Dilution Of A Solution

Stoichiometry Of Chemical Equations

Equation For The Reaction Between Copper Metal And Iron(ii)sulphate

Reaction Of Potassium Iodide And Lead (ii) Nitrate

Reaction Of Barium Ions And Carbonate Ions

Reaction Of Sodium Carbonate And Hydrochloric Acid

Volumetric Analysis (titration)

Direct Titration

Direct Titration Example1

Direct Titration – Example 2

Back Titration 2

Back Titration Example 1

Redox Titration

Redox Titration Example 2

Determining The Amount Of Water Of Crystallization Iron(ii)sulphate

Atomicity And Molar Gas Volume2

Atomicity And Molar Gas Volume

Gay Lussac’s Law

Carbon And Its Compounds

Hydrocarbons – The Alkanes

Cracking Of Alkanes

The Biomass Digester

Nomenclature Of Alkanes

Structural Formula Of Alkanes

Summary Of Nomenclature Of Alkanes

Homologous Series

Naming Of Branched Alkanes

Isomerism In Alkanes

Preparation Of Alkanes

Physical Properties Of Alkanes

Chemical Properties Of Alkanes

Uses Of Alkanes

Hydrocarbons – Alkenes

Nomenclature Of Alkenes

Isomerism In Alkenes

Laboratory Preparation Of Ethene

Physical Properties Of Alkenes

Chemical Properties Of Alkenes

Combustion Of Hydrocarbons

Addition Reaction – Halogenation

Addition Reaction – Hydrohalogenation

Addition Reaction – Hydrogenation

Addition Reaction-self Addition

Addition Reaction-addition Involving Oxidizing Agents

Combustion Reaction Of Hydrocarbons

Test For Alkynes

Uses Of Alkynes

Nitrogen And Its Compounds

Laboratory Isolation Of Nitrogen From Air

Fractional Distillation Of Liquid Air

Laboratory Preparation Of Nitrogen

Physical Properties Of Nitrogen

Chemical Properties Of Nitrogen

Uses Of Nitrogen

Oxides Of Nitrogen

Physical Properties Of Nitrogen (i) Oxide

Chemical Properties Of Nitrogen (i) Oxide

Uses Of Nitrogen(i) Oxide

Nitrogen(ii) Oxide

Physical Properties Of Nitrogen (ii) Oxide

Chemical Properties Of Nitrogen (ii) Oxide

Nitrogen (iv) Oxide

Physical Properties Of Nitrogen (iv) Oxide

Chemical Properties Of Nitrogen (iv) Oxide

Uses Of Nitrogen (iv) Oxide

Chemical Properties Of Ammonia Reaction With Water

Chemical Properties Of Ammonia Reaction With Acids

Chemical Properties Of Ammonia Reaction With Oxygen

Chemical Properties Of Ammonia Reaction With Chlorine

Chemical Properties Of Ammonia Ammonia As A Reducing Agent

Chemical Properties Of Ammonia Reaction With Metal Ions

Large Scale Manufacture Of Ammonia

Uses Of Ammonia

Nitrogenous Fertilizers

Nitric (v) Acid

Industrial Manufacture Of Nitric (v) Acid

Chemical Properties Of Dilute Nitric (v) Acid

Chemical Properties Of Concentrated Nitric (v) Acid

Uses Of Nitric (v) Acid


Test For Nitrates

Pollution Effects Of Nitrogen Compounds

Sulphur And Its Compounds

Extraction Of Sulphur – Frasch Process

Allotropes Of Sulphur – Rhombic And Monoclinic Sulphur

Physical Properties Of Sulphur

Uses Of Sulphur

Oxides Of Sulphur

Physical Properties Of Sulphur(iv)oxide

Chemical Properties Of Sulphur (iv) Oxide Bleaching Action

Chemical Properties Of Sulphur (iv) Oxide Reducing Action

Chemical Properties Of Sulphur(iv)oxide – Oxidising Action

Uses Of Sulphur (iv) Oxide

Sulphur (vi) Oxide Preparation Properties And Uses

Test For Sulphate And Sulphite Ions

Sulphuric(vi) Acid Preparation Properties And Uses

Chemical Properties Of Hydrogen Sulphide

Test For Hydrogen Sulphide

Pollution Of The Atmosphere By Compounds Of Sulphur

Physical Properties Of Chlorine

Chemical Properties Of Chlorine Reaction With Water

Chemical Properties Of Chlorine Reaction With Metals

Chemical Properties Of Chlorine Reaction With Non Metals

Chemical Properties Of Chlorine Oxidizing Property

Chemical Properties Of Chlorine Reaction With Alkaline Solutions

Test For Chlorides

Uses Of Chlorine And Its Compounds

Hydrogen Chloride

Properties Of Hydrogen Chloride

Preparation Of Aqueous Hydrogen Chloride

Reactions Of Aqueous Hydrogen Chloride Solution

Test For Hydrogen Chloride

Industrial Manufacture Of Hydrochloric Acid

Uses Of Hydrochloric Acid

Pollution Of The Environment By Chlorine And Its Compound

Strength Of An Acid – Weak And Strong Acids


Strength Of Bases

Effect Of Solvent On Solute

Amphoteric Oxides And Hydroxides

Salts – Properties And Preparation


Strength Of An Acid

Bases 2


Effect Of Sodium Hydroxide On Ions


Numerical Examples On Solubility

Effect Of Temperature On Solubility

Fractional Crystallization

Water Hardness

Methods Of Removing Water Hardness

Introduction To Thermochemistry

Exothermic And Endothermic Reactions

Heat Changes In Physical Processes

Heat Changes In Chemical Processes

Enthalpy Of Displacement

Molar Heat Of Displacement

Enthalpy Of Neutralization

Enthalpy Of Neutralization Example 1

Enthalpy Of Neutralization Example 2

Enthalpy Of Precipitation

Enthalpy Of Dissolution

Standard Conditions Of Measuring Enthalpy Changes

Relationship Between Enthalpy Of Solution Lattice And Hydration

Relationship Between Enthalpy Of Solution Lattice And Hydration Examples


Hess Law

Hess Law Examples

Bond Energies

Rate Of Reaction And Reversible Reaction

Factors Affecting Rate Of Reaction

Factors Affecting Rate Of Reaction Concentration Of Reactants

Factors Affecting Rate Of Reaction Temperature

Factors Affecting Rate Of Reaction Surface Area

Factors Affecting Rate Of Reaction Catalyst

Factors Affecting Rate Of Reaction Light

Factors Affecting Rate Of Reaction Pressure

Reversible Reactions

Chemical Equilibrium

Factors Affecting Chemical Equilibrium Concentration

Factors Affecting Chemical Equilibrium Pressure

Factors Affecting Chemical Equilibrium Temperature

Redox Reaction

Oxidation Number

Electrochemical Cells

Standard Electrode Potential

Uses Of Standard Electrode Potential

Voltaic Cells

Fuel Cells

Electrolysis Of Sodium Chloride

Electrolysis Of Sodium Copper (ii) Sulphate

Electrolysis Of Dilute Sulphuric(iv) Acid

Calculations In Electrolysis

Mathematics Videos

Place Value Of Numbers

Rounding Off Numbers


Divisibility Test



Integers And The Number Line

Operation Of Integers

Order Of Operations

Fractions – Introduction

Proper Improper And Mixed Fractions

Equivalent Fractions

Comparing Fractions

Fractions In Ascending and Descending Order

Addition Of Fractions

Multiplication Of Fractions

Division Of Fractions

Order Of Operations On Fractions

Word Problems Involving Fractions

Fractions And Decimals

Recurring Decimals

Decimal Places

Operations On Decimals And Problems Involving Decimals

Finding Squares By Multiplication

Squares From Tables

Square Root By Factorization

Square Roots Of Fractions

Square Roots Of Numbers Less Than 1 And Greater 100 From Tables

Algebraic Expressions

Terms Coefficients Variables And Constants

Simplification Of Algebraic Expressions

Algebraic Fractions

Substitution and Evaluation




Change In a Given Ratio

Direct Proportion

Inverse Proportions


Percentage Change

Units Of Length And Conversion Of Units Of Length

Significant Figures


Units Of Area And Conversion Of Units Of Area

Area Of A Rectangle And A Square

Area Of A Triangle Parallelogram And Trapezium

Area Of A Circle

Surface Area Of Solids

Area Of Irregular Plane Shapes


Mass Density And Weight

Units Of Time

The 12 And 24 Hour Systems

Travel Timetables

Linear Equations In One Unknown

Simultaneous Linear Equations In Two Unknowns elimination Method

Simultaneous Linear Equations In Two Unknowns substitution Method


Currency Conversion and Exchange Rates

Profit and Loss

Discount and Commission

Co-ordinates and Graphs

Types Of Angles

Angles On a Straight Line Angles at a Point and Angles on a Transverse

Angle Properties Of Polygons


Other Polygons

Geometrical Constructions

Scale Diagrams

Bearings And Distances

Angles Of Elevation And Depression

Simple Surveying Techniques

Common Solids, Cubes Cuboids Pyramids Prisms Cones And Spheres

Nets Of Solids

Sketching Nets Of Solids

Surface Area Of Solids From Nets

Distance Between Two Points On The Surface Of A Solid

Cubes Of Numbers And By Multiplication

Cubes From Tables

Cube Roots

Introduction To Reciprocals

Reciprocals Of Numbers From Tables

Computation Using Reciprocals

Introduction To Indices And Laws Of Indices

Zero And Negative Indices

Fractional Indices

Logarithm Tables

Logarithms Of Numbers Less Than 1 Or Greater Than 10


Gradient Of Straight Line

Equation Of Straight Line

The Graph Of A Straight Line

Representation Of Data-pictogram Bar Graph

Representation Of Data- Line Graph

Representation Of Data-histogram Frequency Polygon

Statistical Measures

Mean Median Of Grouped Data

Arc, Chord And Segment

Angles Subtended By The Same Arc At The Circumference

Angle In Semicircle

Angle Properties Of A Cyclic Quadrilateral

Introduction To Vectors

Multiplication Of A Vector By A Scalar

Position Vectors

Magnitude Of A Vector

Midpoint Of A Vector

Distance-time Graph

Relative Speed

Intro Frequency Distribution Tables – Ungrouped Data

Frequency Distribution Tables (grouped Data)

Factorization Of Quadratic Expressions

Completion Of The Square

Solution Of Quadratic Equations By Completing The Square

Solution Of Quadratic Equations Using The Formula

Graphs Of Quadratic Functions

Graphical Solution Of Quadratic Equation

Graphical Solution Of Simultaneous Equations

Further Graphical Solutions

Computing Using Calculators

Estimations And Approximations

Accuracy And Errors Absolute Relative Percentage

Propagation Of Errors

Errors In Multiplication And Division

2nd Quadrant

3rd Quadrant

4th Quadrant

Trigonometric Ratios From The Unit Circle

Trigonometric Ratios Greater Than 360 Degrees And Negative Angles

Use Of Calculators

Radian Measure

The Sine Curve

The Cosine Curve

The Tangent Curve

The Sine Rule

The Cosine Rule

Rational And Irrational Numbers – Surds

Simplification Of Surds

Multiplication And Division Of Surds

Addition And Subtraction Of Surds

Further Logarithms

The Laws Of Logarithms

Logarithms Equations And Expressions

Change Of Base

Commercial Arithmetic (ii)

Compound Interest

Appreciation And Depreciation

Sequences And Series

The nth Term Of Geometric Sequence

Arithmetic Progression (A.P) – Series

Geometric Series Or Geometric Progression

Coordinates In Two And Three Dimensions

Column And Position Vectors In Three Dimensions

Unit Vectors In Three Dimensions

Parallel Vectors And Collinearity

Collinearity Example

Proportional Division Of A Line And Ratio Theorem

Vector Methods In Geometry

Binomial Expansion Up To Power Four

Pascal’s Triangle

Coefficient Of Terms In Binomial Expansion

Evaluation Of Numerical Cases Using Binomial Expansion

Experimental Probability

Theoretical Probability

Continuous Sample Space

Combined Events Mutually Exclusive Events

Combined Events Independent Events

The Tree Diagram

Compound Proportions

Continued Proportions

Proportional Parts

Rates Of Work


Graphs Of Cubic Equations

Graphical Solutions Of Cubic Equations

Average Rate Of Change

Instantaneous Rate Of Change

Empirical Graphs

Reduction of Non Linear Laws To Linear Laws

Equation Of A Circle

Identification Of Transformation Matrix

Identification Of Transformation Matrix Example

The Unit Square

Examples On Using The Unit Square

Successive Transformations

Single Matrix Of Transformation For Successive Transformations

Inverse Of A Transformation

Area Scale Factor And Determinant Of A Matrix

Shear And Stretch

Matrices Representing Shear


Matrices Representing Stretch

Mean From Assumed Mean

Mean From Assumed Mean Example

Mean For Grouped Data Using Assumed Mean Method

Estimating The Median


Quartiles Example

Deciles And Percentiles

Cumulative Frequency Curve

Measures Of Dispersion

Mean Absolute Deviation


Variance Example

Variance Of Grouped Data

Standard Deviation

Comprehensive Example

Common Types Of Loci

Locus Of A Point At A Given Distance From A Given Line

Locus Of A Point Equidistant From Two Intersecting Lines

Locus Of A Point At A Given Distance From A Given Point

Constant Angle Loci

Intersecting Loci

In Circle

Escribed Circle

Loci Of Inequalities

Loci Involving Chords

Trigonometric Ratios

Trigonometric Identities 2

Proof Of Trigonometric Identities

Graphs Of Trigonometric Functions

Graphs Of Trigonometric Functions Example 1

Graphs Of Trigonometric Functions Example 2

Graphs Of Trigonometric Functions Example 3

Transformation Of Waves

Solving Trigonometric Equations

Solving Trigonometric Equations example 2

Solving Trigonometric Equations Graphically

Geometric Properties Of Common Solids

Angle Between A Line And A Plane

Angle Between Two Planes

Skew Lines

Latitude And Longitude Great And Small Circles

Latitudinal Difference Between Latitudes on Different Hemispheres


Longitudinal Difference

Longitudes And Time

Distance Between Places On The Earth Surface Example

Distance Between Places On The Earth Surface

Distances Along Latitudes

Speed In Knots And Kilometers Per Hour

Formation Of Linear Inequalities


Gradient Of A Curve At A Point

Gradient Of Y=x^n Where N Is A Positive Integer

Delta Notation

Derivative Of A Polynomial

Equations Of Tangents And Normals To The Curves

Equations Normals To The Curve examples

Stationery Points

Curve Sketching

Curve Sketching Example 2

Application Of Differentiation In Calculation Of Distance Velocity And Acceleration

Maxima And Minima

Area Approximation

Trapezoidal Rule

Applying Three Trapezoidal Rule In Estimating Area

Mid Ordinate Rule

Area By Trapeziodal Rule And Mid Ordinate Rule

Summary Of Differentiation

Integration Process

Examples Of Integration

Determining The Value Of The General Constant

Indefinite And Definite Integrals

Area Under A Curve By Integration

Area Under A Curve By Integration example 3

Area Under A Curve By Integration example 4

Application In Kinematics

Physics Videos

Introduction To Physics

Branches Of Physics

Relationship Between Physics Other Subjects And Technology

Career Opportunities In Physics And Laboratory Safety Rules

First Aid Measures

Basic Physical Quantities And Their Si Units


Curved Lengths

Estimation Of Length


Area Of Irregularly Shaped Objects


Volume Of Liquids And Volume Of Irregularly Shaped Solids



Measurement Of Density

Problems Involving Density


Definition Of Force

Types Of Forces

Surface Tension

Mass Weight And Their Relationship

Scalar And Vector Quantities

Pressure In Solids

Pressure In Liquids

Factors Affecting Pressure In Fluid And Derivation Of Fluid Pressure Formula

Pascal’s Principle

Applications Of Pascal’s Principle Hydraulic Lift

Applications Of Pascal’s Principle Hydraulic Break System

Measurement Of Pressure U Tube Manometer

Measurement Of Pressure Mercury Barometer

Applications Of Pressure The Bicycle Pump And The Siphon

Applications Of Pressure The Lift Pump

Applications Of Pressure The Force Pump

Particulate Nature Of Matter Introduction

Brownian Motion

Particle Arrangement And Change Of State

Diffusion In Liquids And Gases

Thermal Expansion


Features Of A Common Thermometer

Temperature Scale

Celsius And Kelvin Scales

Clinical Thermometers And Other Types Of Thermometers

Thermal Expansion And Contraction In Solids

Application Of Thermal Expansion In Solids

The Bimetallic Strip

Thermal Expansion In Liquids

The Anomalous Expansion Of Water

Thermal Expansion In Gases

Heat And Temperature

Conductivity Of Substances

Thermal Conductivity Of Various Solids

Thermal Conductivity In Liquids

Thermal Conductivity In Gases

Convection Currents


Applications Of Thermal Radiation

Rectilinear Propagation Of Light Introduction

Pin Hole Camera

Reflection At Plane Surfaces

Plane Mirrors

Application Of Reflection At Plane Surfaces

Electrostatics Introduction

Law Of Charges

Methods Of Charging Charging By Induction

Methods Of Charging Charging By Contact

Methods Of Charging Charging By Separation

Gold Leaf Electroscope

Circuit Symbols

Simple Electric Circuit

Series And Parallel Connection Of Cells

Series And Parallel Connection Of Bulbs

Sources Of Electricity

The Dry Cell

Secondary Cells

Care And Maintenance Of Secondary Cells

Introduction To Magnets

Directional Property Of Magnets

Magnetic And Non Magnetic Materials

Basic Law Of Magnetism And Types Of Magnets

Magnetic Field Patterns

Domains Theory


Methods Of Magnetisation And Demagnetisation

Hard And Soft Magnetic Materials

Measurement Of Length Using Vernier Callipers

Zero Error For A Vernier Callipers

Measurement Of Length Micrometer Screw-gauge

Decimal Places Significant Figures And Standard Form

The Oil Drop Experiment

Moment Of A Force

Principle Moments

Equal And Anti Parallel Forces

Applications Of Anti Parallel Forces

Introduction To Equilibrium And Center Of Gravity

Centre Of Gravity Experiment.

States Of Equilibrium

Factors Affecting Stability And Application Of Stability

Types Of Curved Mirrors

Principal Axis Principal Focus Centre Of Curvature And Related Terms

Image Formation

Image Formation By Concave Mirrors

Image Formation By Convex Mirrors


The Mirror Formula

Applications Of Curved Mirrors

Magnetic Field Due To Current

Magnetic Field Patterns A Solenoid

Factors Affecting Strength Of An Electromagnet

Applications Of Electromagnets

The Motor Effect

Simple Motor

Hooke’s Law

Combination Of Springs

Problems On Hooke’s Law

Energy Stored In A Spring

Waves – Introduction

Waves Introduction

Transverse Waves

Longitudinal Waves

Wave Motion

Speed Wavelength And Frequency

Sound Nature And Sources

Propagation Of Sound

Factors Affecting Speed Of Sound

Applications Of Speed Of Sound

Problems On Velocity Of Sound

Streamline And Turbulent Flow

Rate Of Flow Of Fluids

Equation Of Continuity

Problems On Equation Of Continuity

Bernoulli’s Effect & Applications

Hazards Of Bernoullis Effect

Introduction To Linear Motion

Distance And Displacement

Speed Velocity Acceleration

Motion Time Graphs

Measuring Speed Velocity Acceleration

Equations Of Linear Motion

Motion Under Gravity

Examples On Motion Under Gravity

Total Internal Reflection

Effects Of Total Internal Reflection

Newton’s First Law Of Motion

Newton’s Second Law Of Motion

Newton’s Third Law Of Motion

Weight Of Body On A Lift

Conservation Of Linear Momentum



Laws Of Friction

Applications Of Friction


Sources Of Energy

Renewable And Non Renewable Sources Of Energy

Forms Of Energy And The Law Of Energy Conservation

Work And Energy

Examples On Work And Energy

Kinetic Energy



Example On Machines


Wheel And Axle

The Inclined Plane


Hydraulic Machines

Current Electricity And Potential Difference

Properties Of Waves

Properties Of Waves Rectilinear Propagation

Properties Of Waves Refraction

Refraction Of Sound And Water Waves

Properties Of Waves Diffraction

Properties Of Waves Interference

Properties Of Waves Reflection

Constructive And Destructive Interference

Interference In Light

Stationary And Progressive Waves

Comparison Of Stationary And Progressive Waves

Review Of Electrostatics I

Electric Field Patterns

Charge Distribution On Conductors

Charges On Sharp Points

Capacitors And Capacitance

Charging And Discharging Capacitors


Combination Of Capacitors Capacitors In Series

Combination Of Capacitors Capacitors In Parallel

Examples On Combination Of Capacitors

Energy Stored In A Charged Capacitor

Applications Of Capacitors

Introduction And Factors Determining Heat Produced By Current

Electrical Energy And Power

Applications Of Heating Effect Of An Electric Current

Electrical Devices

Heat Capacity

Specific Heat Capacity

Specific Heat Capacity Of Solids

Change Of State

Latent Heat Of Fusion And Specific Latent Heat Of Fusion

Determination Of Latent Heat Of Fusion

Latent Heat Of Vaporization And Specific Latent Heat Of Vaporization

Factors Affecting Melting And Boiling Points


Applications Of Cooling By Evaporation

Boyle’s Law – Introduction

Boyles Law

Charles Law

Pressure Law

The Equation Of State

Gas Laws And Kinetic Theory Of Gases

Types Of Lenses

Definition Of Terms

Ray Diagrams

Characteristics Of Images Formed By Lenses convex Lens

Characteristics Of Images Formed By Lenses concave Lens

Linear Magnification

Magnification And Focal Length

Optical Devices Simple Microscope

Optical Devices Compound Microscope

The Human Eye

The Radian Angular Displacement Angular Velocity

Centripetal Acceleration

Centripetal Force

Graphical Interpretations And Equations

Case Examples Of Circular Motion 2

Case Examples Of Circular Motion 3

Motion In A Vertical Circle

Applications Of Uniform Circular Motion

Problem Solving

Archimedes’ Principle Laws Of Floatation

Upthrust Volume And Weight

Upthrust In Gases

Example On Upthrust In Gases

The Law Of Floatation

Upthrust And Relative Density

Applications Of Archimedes’ Principle And Relative Density

Electromagnetic Spectrum And Properties Of Electromagnetic Waves

Production Detection And Applications Of Electromagnetic Waves

Hazards Of Electromagnetic Waves

Electromagnetic Induction Introduction

The Induced Emf Using A Coil

Factors Affecting The Magnitude Of An Induced E M F

Fleming’s Right Hand Rule

Mutual Induction


Transformers Step Down Transformer

Transformers Step Up Transformer

The Transformer Equation

Mathematical Applications Of The Transformer Equation

Energy Losses In A Transformer

Other Applications Of Electromagnetic Induction Induction Coil And Moving Coil Loudspeaker

Sources Of Mains Electricity

Power Losses During Transmission

Domestic Wiring

Lighting Circuit

The Two Way Switch Circuit

The Cooker Circuit And The Ring Mains Circuit

The Three Pin Plug

Electrical Energy Consumption And Costing

Problems On Mains Electricity