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Proportionality: Direct and Inverse 150 150 SchoolTutoring Academy

Proportionality: Direct and Inverse

Two quantities are said to be proportional if their ratio is constant. In other words, the two quantities are proportional if one of them is always the product of the other and a constant quantity called coefficient of proportionality or proportionality constant. The symbol  is used to show that two quantities are proportional. Direct Proportionality…

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Understanding Types of Sentences by Purpose 150 150 SchoolTutoring Academy

Understanding Types of Sentences by Purpose

A sentence is a group of word that makes complete sense and tells a complete thought. A sentence always tells “who” or “what” and “what is” or “what happens”. Example: Friend tammy my friend is. – makes no sense, therefore it is not a sentence. Tammy is my friend. – makes complete sense, therefore it…

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Physics Review: Force and Their Types 150 150 SchoolTutoring Academy

Physics Review: Force and Their Types

Force may be defined as push or pull. In physics, a force is any influence that causes or tends to cause an object to undergo a change in state of motion, a change in direction, or a change in shape. Force can change the velocity, bring the object at rest in motion or stop the…

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Understanding Pronouns and Their Types 150 150 SchoolTutoring Academy

Understanding Pronouns and Their Types

A pronoun is a word which is used in place on noun or nouns. The replaced noun is called the antecedent of the pronoun. Pronoun is used very often to avoid repetition of noun. She, he, they, I, him, her, them, us, we are common pronouns. Example: In place of: Genelia makes good cakes. She…

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English Grammar Review: Subject of a Sentence 150 150 SchoolTutoring Academy

English Grammar Review: Subject of a Sentence

Every complete sentence contains a subject. A subject is a word or phrase is a sentence that indicates the doer of action, the receiver of action in passive form, or which is described or identified in the sentence. The subject of a sentence can be a person, place, thing or an idea. To find the…

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How to Do a Box-and-Whisker Plot 150 150 SchoolTutoring Academy

How to Do a Box-and-Whisker Plot

In statistics, various measures are used to describe data set without listing all the data. Measures of spread are given by range, variation and standard deviation. Description of shapes are given like skewed, symmetric, unimodal and bimodal.  We have measures of locations like mean and median. A set of five measures of location give us…

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Understanding Quartiles, Median and Interquartile Range 150 150 SchoolTutoring Academy

Understanding Quartiles, Median and Interquartile Range

In statistics, quartiles are three points that divide the data set into four equal groups. Each group represents the one-fourth of the data set. First quartile (Q1), also known as lower quartile, splits the lower 25% of data. It is the middle value of lower half. Second quartile (Q2) which is more commonly known as…

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Composition of the Earth’s Atmosphere 150 150 SchoolTutoring Academy

Composition of the Earth’s Atmosphere

The Earth’s atmosphere is a layer of gases surrounding the Earth. The atmosphere absorbs solar radiations warming the surface by retaining heat. The composition of the atmosphere is very important for life to sustain on the Earth. The atmosphere consists of  Nitrogen (78%), Oxygen (21%), Water (4%), Argon (0.93%), Carbon Dioxide (0.039%), Neon (0.0018%), Helium…

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Layers of the Earth’s Atmosphere 150 150 SchoolTutoring Academy

Layers of the Earth’s Atmosphere

The earth’s atmosphere consists of Nitrogen (78%), Oxygen (21%), Water (4%), Argon (0.93%), Carbon Dioxide (0.039%), Neon (0.0018%), Helium (0.0005%), Methane (0.00018%), Hydrogen (0.00005%),  Nitrous Oxide (0.00003%) and Ozone (0.000004%). Some traces of Krypton, Xenon and Radone are also found in the atmosphere. The Earth’s atmosphere is composed of five layers characterized by their own…

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Newton’s Laws of Motion 150 150 SchoolTutoring Academy

Newton’s Laws of Motion

  An object is said to be in motion if it changes its position with time. A body which does not move is said to be at rest, motionless , or stationary. Sir Isaac Newton, one of the great scientists and mathematicians, gave three laws of motions popularly known as Newton’s three laws of motion.…

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