‘Number is the measure of all things’ said Pythagoras. ‘The laws of Nature are written in the language of Mathematics’, said Galileo. This little puffer male fish makes a circular pattern with a rotational order of symmetry of 23. As all living beings evidently belong to the same family, it is good to know that […]
An introduction to the Vedic method of division
Within the system of algorithms known as Vedic Mathematics, this method is described as the Crowning Gem. This intoduction shows how to divide by some two digit divisiors. To deal with three or more digit divisors, it is necessary to have some fluency with the’vertically and crosswise’ method of multiplication, which is far superior to […]
Divisibilty Tests for 7,13,17, 19 etc. Part 2
In this video we will develop tests for primes ending in 9 and for primes which have multiples ending in 9. In principle, all primes have such multiples but sometimes an easier test can be made by using a multiple of the prime which ends in 1.
Divisibility Tests for 7, 13, 17, 19 etc. part 1
This is the first of two videos showing you how to make simple and easy tests for primes. It is made for everyone who enjoys the play of numbers and particularly for Maths (or Math) teachers who would like to answer the common question ‘Is there a test for 7?’ when teaching this topic.The methods […]
