Hi friends, in today's class we all are going to discuss about Estimation and measurement and what is measurement for grade IV. There are many physical quantity such as a length, time, weight, temperature etc .The process by which these physical quantities are determined with their units is called measurement. For example the temperature unit is degree Celsius. Measurement is necessary in every field like mathematics, sciences or in real life. Let's take a real life example which may help you to understand the measurement. When we are buying fruits and vegetables, we need to know how much quantity of fruits and vegetables are taken. On the basis of quantity the shopkeeper tells us the price of those things. This whole process is called Measurement. So, the determination or estimation of ratios of quantities is called measurement. Now I am telling you the units and systems of physical quantity. Every physical quantity has their SI units. SI unit means the International System of Units which is widely adopted around the world. But, before the SI units there are other system of units like imperial system, metric system. The imperial system of units was used in Britain, the Commonwealth and the United States. The imperial system of units remains in use in Britain. For example the signs of road are still in miles, yards, milk and cider are sold by the pint. The Imperial system of units are used in many other places also for example, in many Commonwealth countries, land area is measured in acres and floor space in square feet. Now the other system is metric system of units. The decimal systems
(also try adding decimal calculator) of measurement are called metric system of units and based on its units for length the meter and for mass the kilogram. In everyday and scientific purposes metric units of mass, length, and electricity are widely used around the world.
The units of multiples and fractions (read also how to do fractions) are expressed as Powers of 10 of each unit. The conversions of units are always simple because they are in the ratio of ten, one hundred, etc. So that conversions are achieved by simply moving the decimal place like 1.134 meters is 1134 millimeters or 0.001134 kilometers. For example, lengths and distances are measured in meters, or thousandths of a meter (millimeters), or thousands of meters (kilometers).
Now some International System of Units: The modern revision of the metric system is called International System of Units. International System of Units is the world's most widely used system which is used both in everyday or real life and in science. This system was developed in 1960 from the meter-kilogram-second (MKS) system, rather than the centimeter-gram-second (CGS) system. Following are the six basic physical quantities
Meter (m) is the SI unit of length.
Second (s) is the SI unit of time.
Kilogram (kg) is the SI unit of mass.
Ampere (A) is the SI unit of electric current.
Degree Kelvin (K) is the SI unit of thermodynamic temperature.
Candela (cd) is the SI unit of luminous intensity.
From the above discussion I hope that it would help you to understand Estimation and measurement.
In upcoming posts we will discuss about Equivalent Fraction of grade IV and Mean and median in Maths. Visit our website for information on west bengal board of primary education
(also try adding decimal calculator) of measurement are called metric system of units and based on its units for length the meter and for mass the kilogram. In everyday and scientific purposes metric units of mass, length, and electricity are widely used around the world.
The units of multiples and fractions (read also how to do fractions) are expressed as Powers of 10 of each unit. The conversions of units are always simple because they are in the ratio of ten, one hundred, etc. So that conversions are achieved by simply moving the decimal place like 1.134 meters is 1134 millimeters or 0.001134 kilometers. For example, lengths and distances are measured in meters, or thousandths of a meter (millimeters), or thousands of meters (kilometers).
Now some International System of Units: The modern revision of the metric system is called International System of Units. International System of Units is the world's most widely used system which is used both in everyday or real life and in science. This system was developed in 1960 from the meter-kilogram-second (MKS) system, rather than the centimeter-gram-second (CGS) system. Following are the six basic physical quantities
Meter (m) is the SI unit of length.
Second (s) is the SI unit of time.
Kilogram (kg) is the SI unit of mass.
Ampere (A) is the SI unit of electric current.
Degree Kelvin (K) is the SI unit of thermodynamic temperature.
Candela (cd) is the SI unit of luminous intensity.
From the above discussion I hope that it would help you to understand Estimation and measurement.
In upcoming posts we will discuss about Equivalent Fraction of grade IV and Mean and median in Maths. Visit our website for information on west bengal board of primary education
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