KTByte, which aims to enable students to excel in computer science, will offer classes in Newton for ages 9-12 this spring at 437 Cherry Street in West Newton square, on Thursdays, February 9-June 22:  Computing Fundamentals 1 (4:10-5:10PM; register) and Computing Fundatmentals 2 (5:20-6:20PM; register).  Other classes are available at other locations and times.  Free online trials are available:  Ages 9-12 (December 15, 11:20AM) and Ages 13+ (December 16, noon).  For other times or more information, contact inquiry@ktbyte.com.