Note on solving for the dynamics of the Universe

In a recent article, Faraoni proposed an alternative procedure to solve the Friedman-Lemaitre-Robertson-Walker cosmological equations. The basic resul t of that paper was obtained long ago through a different approach, which s eems to be little known and deserves closer attention due to its pedagogica l interest. The broad importance of this method is readily recognized by ex amining some additional cases not considered by Faraoni. Its instructive po tential for introductory courses on cosmology has been positively verified by the author in many lectures during the last decade. (C) 2001 American As sociation of Physics Teachers.