A two door gate of unknown width is opened so that a 2 inch gap exists between the two doors.

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

A two door gate of unknown width is opened so that a 2 inch gap exists between the two doors.

Given a rectangle, find the line through one vertex of minimum length that passes through the extensions of the two opposite sides.

The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.

There is a right triangle where: the sum of the upright multiplied by itself twice and the hypotenuse multiplied by itself is 700 units; and, the sum of the base multiplied by itself twice and the hypotenuse multiplied by itself is 900 units.

There is a circle from within which a square is cut, the remaining portion having an area of 47.6255 square units.

Three men wish to buy a horse but none have a sufficient amount of money for the purchase; to do so they must borrow from each other. How much money does each man have and what is the price of the horse?

How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

What is the perpendicular height of a cloud when it's angles of elevation were 35 degrees and 64 degrees as taken by two observers?

A wooden log is encased in a wall. If we cut part of the wall away to a depth of 1 inch...

How much does Landowner A give to each worker knowing Landowner B gives a certain amount more and has few workers.