A 10 minute tutorial for solving Math problems with Maxima
http://math-blog.com/2007/06/04/a-10-minute-tutorial-for-solving-math-problems-with-maxima/
wxMaxima
wxMaxima is a document based interface for the computer algebra system Maxima. wxMaxima provides menus and dialogs for many common maxima commands, autocompletion, inline plots and simple animations. wxMaxima is distributed under the GPL license. You may download it from http://andrejv.github.io/wxmaxima/