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Modules

K-12

Venation

OverviewFine lines present on the surface of a leaf are leaf veins. The pattern of arrangement of veins on the leaf is called venation. It can be of two types, namely,...

Language Learning

English Language Learning

This ELL series is designed to help all learners of English, in many areas, from pronunciation to conversation practice. Use this VR series to work on your speaking...

OverviewChromosomes are formed by the condensation of chromatin. They are mainly of four types, namely, metacentric, submetacentric, acrocentric and telocentric. Learning...

OverviewPure substances are made of only one type of atom or only one type of molecule. For example, pure iron would only contain iron atoms, pure water would only...

OverviewA heat engine is a device that converts some thermal energy into mechanical energy. Some examples of heat engines are: a thermal power station, a steam locomotive,...

Higher Education

Poliovirus

OverviewPoliovirus is a human retrovirus which is responsible for polio or poliomyelitis. It is mainly comprised of the RNA genome and protein capsid.Learning ObjectivesAfter...

Higher Education

Excretory System

OverviewThe excretory system consists of kidneys, ureter, urethra and urinary bladder. It helps the body in filtration and excretion of metabolic waste and unwanted...

Higher Education

Waves in Matter

OverviewWater waves and sound waves require matter or a medium to move from place to place. In context with matter, waves travel fastest in solids and slowest in...

OverviewThe digestive system is one of the major organ systems of the human body. The main parts of the digestive system are the mouth, oesophagus, stomach, small...

Higher Education

Waves and Particles

OverviewAn electromagnetic wave can behave as a particle called a photon. A photon is a massless bundle of energy that behaves like a particle and a wave. The photon's energy depends on the frequency of the wave. Its energy increases as the wave's frequency increases.Learning ObjectivesAfter completing this module, you will be able to:- Explain that a wave can behave as a particle.- Define photons.- Explain that a particle can behave as a wave.

OverviewA neuron is the basic component of the brain and the spinal cord of the central nervous system. The main parts of a neuron are nucleus, dendrite, axon, cell...

Higher Education

Polarization of Light

OverviewPolarization of light is the phenomenon in which the vibrations of light are restricted in a direction perpendicular to the direction of the propagation...

Higher Education

Cardiac Cycle

OverviewThe cardiac cycle is the sequence of events that take place when the heart beats. A single cycle can be divided into two phases, systole and diastole. Learning...

K-12

Teeth

OverviewA tooth has three parts. The outermost visible part is called the crown. The region which is hidden in gums is called the root. The region between the crown...

Overview An object can float or sink depending on its density as compared to the density of the fluid in which it is placed. An object floats if its density is less...

OverviewThe human skeletal system is categorized into two types: the axial skeletal system and the appendicular skeletal system. The appendicular skeletal system...

Higher Education

Parts of Digestive System

OverviewThe digestive system is one of the major organ systems in our body. Its main parts are mouth, esophagus, stomach, liver, gallbladder, small intestine, large...

OverviewA microscope is a device used to magnify small, close objects. It uses two convex lenses – an objective lens and eyepiece, with relatively short focal...

K-12

Budding

OverviewBudding is a type of asexual mode of reproduction in which a new organism develops as a bud on the body of an existing organism (parent). The new organism...

OverviewA leaf is comprised of the upper epidermis, palisade mesophyll cells, spongy mesophyll cells, and the lower epidermis. The lower epidermis contains many...