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January 2012

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English Topics on Adverb
English Topics on Adverb 150 150 SchoolTutoring Academy

An adverb is defined as a word that can modify a verb, an adjective, another adverb, a phrase, or a clause. Adverbs typically answer questions such as how?, in what…

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Inscribed Angle and Conjectures
Inscribed Angle and Conjectures 150 150 SchoolTutoring Academy

An inscribed angle is an angle formed by two chords in a circle which meet at a common point. This common endpoint forms the vertex of the inscribed angle. The…

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Heron’s Formula: Area of a Triangle
Heron’s Formula: Area of a Triangle 150 150 SchoolTutoring Academy

Heron’s formula is used to calculate the area of a triangle if all three sides are known. It is called “Heron’s Formula” after Hero of Alexandria who was a Greek…

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Review of Adjectives
Review of Adjectives 150 150 SchoolTutoring Academy

An adjective is a word, a phrase or a clause used to describe a noun. Adjectives are invariable. They do not change their form depending on the gender or number…

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Types of Triangles
Types of Triangles 150 150 SchoolTutoring Academy

Triangles are polygons with 3 sides and 3 angles which always add up to 180°. Types of triangles may be classified by their sides, by their angles or by a…

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Electron Review: Valence Electron and Valency
Electron Review: Valence Electron and Valency 150 150 SchoolTutoring Academy

Valence electron is an electron of an atom located in the outermost shell of the atom and can be transferred to or shared with another atom. It is most likely…

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Electron Configuation
Electron Configuation 150 150 SchoolTutoring Academy

Electron configuration was first conceived of under the Bohr model of the atom. Electrons revolve around the positively charged nucleus (made of neutrons and protons) in orbits called shells. Each…

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Chemistry Review: Electron Shells and Subshells
Chemistry Review: Electron Shells and Subshells 150 150 SchoolTutoring Academy

An atom is a basic building block of matter around us. Each atom is consists of the fundamental particles: negatively charged electron, positively charged proton and neutral neuron. Shells Electrons…

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Core Math Concepts: Greatest Common Divisor
Core Math Concepts: Greatest Common Divisor 150 150 SchoolTutoring Academy

The greatest common divisor (gcd), also known as highest common factor (hcf), or greatest common factor (gcf), of two integers a and b is defined as the largest integer that…

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Physical and Chemical Changes
Physical and Chemical Changes 150 150 SchoolTutoring Academy

Physical changes Physical changes are changes that do not affect the chemical composition of a substance. No new product is formed during physical change. Physical changes are concerned with energy…

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