You remember math, right? You know math. It's complicated, and just scary in general, and now those are apparently excuses for profiling an Italian economist and mathematician before having him ...

THIS book is the work of a reformer, not so much of geometry, as of the mode of presenting it to the young. Sciences begin in practical applications, and tend by a universal law to become more and ...

THIS book contains a revised edition of Books III., IV., V., of the “Syllabus of Plane Geometry” drawn up by the Association for the Improvement of Geometrical Teaching, with demonstrations of the ...

An airplane, traveling with a constant engine speed, makes a large and perfect circle parallel to the ground. There is no wind. Will it complete the same circle in greater, less or the same time if ...