Subjects taught at school to children should change to suit current time. Specially mathematics. My son wanted help in calculating square root, I have completely forgotten how to do it, whenever necessity I use the calculator. Even some of the multiplication table are forgotten, long division can vaguely remember but able to guess out hire to do it.
We use modern calculators to do these. Even solving liner equations, finding x and y when two equations of x and y are given, is trivial four modern calculators.
We need to change how we teach maths to students. My son is dyslexic he need a calculator to do maths, we didn't force him, strangely enough he is getting a special interest in maths(the only subject he is interested in). Like that there will be lot of students who will learn maths if calculators are given at tender age.
Since the future is electronic calculators let them learn how it works. Binary numbers and mathematics by binary numbers. What are binary, digital, hexadecimal numbers and how to convert.
Another important field for future is cryptography. For four ordinary level you can teach what are hash functions. There uses and how to calculate. Then fit advance level, public and private keys and introduction for bitcoin. At degree level crypto currencies and blockchain technologies. Then smart contracts. How crypto currency nodes operate.
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