IN his book On the Education of an Orator, Quintilian gives an excellent series of reasons why the pleader should be taught mathematics. His doctrine is that geometry, as he calls it, is, in its two ...

THESE books are intended for the use of teachers who instruct their classes orally in the processes and rules of arithmetic, and who only require the assistance of graduated sets of exercises. In the ...

Playing with arithmetic can lead us to unexpected and profound discoveries that point toward deeper mathematics and sometimes even deeper science. We solved our last Insights puzzle by performing some ...