Saturday, 30 November 2013
Wednesday, 27 November 2013
Maths TLM Maths LAB
more Maths TLM on
http://mathsworldtlm.blogspot.in/
http://mathsworldtlm.blogspot.in/
Saturday, 16 November 2013
Geoboard
A Geoboard is a
Mathematical tool used to explore basic concepts in plane Geometry such as
perimeters, area etc and also the characteristics of Polygons. It consists of a
physical board with a certain numbers of nails half driven in ,around which
rubber bands can be wrapped.
Geoboard were onvented
by Egyptian Mathematician Caleb Gattegno ( 1911 – 1988 )
Structure and use
A variety of boards are
used. Originally made out of plywood and brass nails or pegs, geoboards are now
are usually made out of plastic. They may have an upright square of either
9, 16 or 25 nails or more, or a circle of nails around a central nail. Students
are asked to place rubber bands around the nails to explore geometric concepts
or to solve mathematical puzzles.
Geoboards
may be used to learn about
plane
shapes, translation, rotation, reflection, similarity, co-ordination,
counting,
right angles, pattern, classification, scaling, position, congruence, area, perimeter.
PRIME NUMBERS
Prime numbers are those numbers (> 1) that cannot be divided by
any number except themselves and one.
The Greek Eratosthenes created a method to find out these prime
numbers, although it only worked over a limited range:
1) Write out the numbers from 1 to 100 in ten rows of 10.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
...........................................
...........................................
91 92 93 94 95 96 97 98 99 100
2) Cross off number 1, because all primes are greater than 1.
3) Number 2 is a prime, so we can keep it, but we need to cross
off the multiples of 2 (i.e. even numbers).
4) Number 3 is also a prime, so again we keep it and cross off the
multiples of 3.
5) The next number left is 5 (because four has been crossed off),
so we keep it and cross of the multiples of this number.
6) The final number left in the first row is number 7, so cross
off its multiples.
7) You have finished. All of the "surviving" numbers
(colored in white below) on your grid are prime numbers.
Tuesday, 12 November 2013
Monday, 11 November 2013
Friday, 1 November 2013
Dictionary of Mathematics
Dictionary of Mathematics
The word Mathematics comes from the
Greek word Mathema, which means ‘learning’, ‘study’, ‘Science’, and
additionally came to have the narrower and more technical meaning , “Mathematical
Study”. Mathematics plays a vital role in developing the power of logical
reasoning and concentration.
Dictionary of Mathematics ( mathematicdictionary.blogspot.com , ) is an
interactive website which is an array of innumerable concepts and definitions
in a precise, simple and comprehensive way. They have been gradually and
systematically developed.
This website delves into the various
mathematical arenas and can be used as a handy reference guide by all. The exposition
is simple and rigorous. It helps to increase understanding of concepts,
thinking and reasoning power.
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