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  • Class6,Science,Motion And Measurement of Distances,Transportation and DistancesClass6,Science,Motion And Measurement of Distances,Transportation and Distances
    Before the invention of the wheel, the only means of transportation was walking. For transporting goods, people used animals like donkeys, horses, mules, elephants, oxen, sled dogs, and even bison. Boats were also used as a means of transportation...nexteducation2013-03-04T01:09:131,697 views00:18:14
  • Class7_Science_Electric Current and its Effects_Electric ComponentsClass7_Science_Electric Current and its Effects_Electric Components
    In the 19th century, James Joule studied a property, which says that "when an electric current flows through the filament of a bulb, it generates heat, and so the bulb becomes hot". This property is named the heating effect of electric current. Wh...nexteducation2013-03-04T00:59:16702 views00:10:33
  • Class6,Maths,Fractions,Comparing FractionsClass6,Maths,Fractions,Comparing Fractions
    Fractions with the same denominator are called like fractions.
    Comparing like fractions: In like fractions, the fraction with the greater numerator is greater.

    Two fractions are unlike fractions if they have different denominators....
    nexteducation2013-03-03T23:54:232,185 views00:15:04
  • Class6,Maths,Ratios and Proportions,RatiosClass6,Maths,Ratios and Proportions,Ratios
    Usually, the comparison of quantities of the same type can be made by the method of difference between the quantities. However, a more meaningful comparison between the quantities can be made by using division, i.e. by verifying how many times one...nexteducation2013-03-02T05:39:151,806 views00:19:16
  • Class7_Science_Electric Current and its Effects_Electric ComponentsClass7_Science_Electric Current and its Effects_Electric Components
    In the 19th century, James Joule studied a property, which says that "when an electric current flows through the filament of a bulb, it generates heat, and so the bulb becomes hot". This property is named the heating effect of electric current.
    W...
    nexteducation2013-03-02T04:59:14621 views00:10:33
  • Class7_Science_Respiration in Organisms_RespirationClass7_Science_Respiration in Organisms_Respiration
    The cells in our body perform functions like growth, excretion, reproduction, etc. A cell needs
    energy to perform these functions. The food we take in is converted into glucose by the digestive system.
    The cells of living organisms require a con...
    nexteducation2013-03-02T03:34:16504 views00:07:09
  • Class8_Science_Metals and Non-Metals_MetalsClass8_Science_Metals and Non-Metals_Metals
    Metals are used in making machinery, automobiles, aeroplanes, buildings, trains, satellites, gadgets, cooking utensils, water boilers, etc.
    Sodium and potassium are soft metals that can be cut with a knife. Mercury is a liquid metal.
    nexteducation2013-03-02T02:49:14570 views00:11:53
  • Class7_Maths_Rational Numbers_Introduction to Rational NumbersClass7_Maths_Rational Numbers_Introduction to Rational Numbers
    All numbers, including whole numbers, integers, fractions and decimal numbers, can be written
    in the numerator-denominator form. A rational number is a number that can be written in the form p/q, where p and q are integers and q ≠ 0. . The de...
    nexteducation2013-03-02T02:44:171,883 views00:17:42
  • Class7_Science_Acids, Bases and Salts_IndicatorsClass7_Science_Acids, Bases and Salts_Indicators
    Many substances that you encounter in your daily life have different properties. One major
    difference between substances is whether they are acidic or basic. There are special substances
    that are used to test whether something is acidic ...
    nexteducation2013-03-02T02:34:14496 views00:11:10
  • Class7_Maths_Perimeter and Area_Plane figuresClass7_Maths_Perimeter and Area_Plane figures
    Triangle:
    A triangle is a polygon with three vertices, and three sides or edges that are line segments. A triangle with vertices A, B, and C is denoted as ABC
    Circle:
    A circle is defined as a collection of points on a plane that are...
    nexteducation2013-03-01T02:34:20409 views00:19:03
  • Class8_Science_Cell-Structure and Functions_Introduction to CellClass8_Science_Cell-Structure and Functions_Introduction to Cell
    With the help of a microscope, an English scientist, Robert Hooke, first discovered the existence of cells in 1665.Scanning electron microscopes are used to examine the external parts of various organisms.The transmission electron microscope is us...nexteducation2013-03-01T02:29:21452 views00:17:04