In Ms. Diana Taremi’s Art Club it’s all about line, form, color and composition. More than a dozen middle school students started on several projects on Monday afternoons; creating art both for themselves and making projects to beautify the school. Their first assignment: Georgia O’Keefe-style painting on large canvases for the first floor hallway. The bright, lush flower canvasses are still works in progress. The students are also creating flower tile mosaics that will be set in cement and used as stepping stones in the school’s kitchen garden. Ms.Emily Bhargava, a mosaic artist from Somerville, donated her time and bags and boxes of materials; tiles from large to small to the art club for the project. On a recent afternoon, Ms. Bhargava spent an afternoon at Art Club teaching Ms. Taremi and the students how to assemble the mosaics. First the students painted large pictures of flowers. They covered these with plastic wrap to protect them; then layered mesh on the