Art historian Beth Stein is teaching “Henri Matisse: The Master of Color,” part of Lifetime Learning at Snow Library, on Tuesday, March 23rd, at 10:30 a.m. to noon. Also on Tuesday, yoga teacher Kathie Dowd Gulotta teaches the first of three sessions on “Juxtaposition: Science, Poetry, and Breathing” from 1:30 to 3 p.m. Registration is $10 per course at friendsofsnowlibrary.org.