WSB Seventh Graders learn to replicate the technique of the Masters' Studios of Florence using colored pencil. An important addition to Renaissance painting was the practice of using a grid system to transfer scale drawings. The grid, in the Renaissance, became an important element in the construction of art works which were meant to look natural and without distortion even though they were painted on curved ceilings of buildings. Later, in the sixteenth century, this grid system made both the illusion of extended architectural space and anamorphic paintings possible. The Florentine artist Masacchio was the first to transfer details from a drawing on to the Trinity fresco in the Santa Marie Novella using the grid technique. Integrating the arts in the classroom is an essential element of the Waldorf Curriculum.