Top Banana Education Foundation, on Winchester Street in Newton, will offer new Sunday classes in information technology and computer science this fall.  Designed to be rigorous, age-appropriate and fun, the classes will include theory and lab practice in topics such as computer components, operating systems, how the Internet works, computer security, algorithms and programming structures, data structures, pattern recognition, and regular expressions.  Top Banana offers a range of weekend and after-school classes in math (K-8 grade) and physics (7-8 grade).  Classes start September 9.  For more information email aseriy@topbananaeducation.org or call 617-795-1557.