THIS key will be welcomed by all those who are employing Mr. Brooksmith's excellent arithmetic. It has been prepared especially for the use of teachers, who will find it a valuable aid in their work, ...

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In the early years of the Republic, arithmetic was generally taught to teenaged boys planning careers in commerce, often by private tutors. With the advent of free common or elementary schools ...

Alan Turing, Albert Einstein, Stephen Hawking, John Nash—these “beautiful” minds never fail to enchant the public, but they also remain somewhat elusive. How do some people progress from being able to ...