Piet Mondrian was a painter known for his abstract geometric compositions using only horizontal and vertical lines and the primary colors of red, yellow, and blue. The document provides instructions for creating a Mondrian-style artwork using a chosen shape outlined with lines and filled with two contrasting color families, one warm and one cool. Learners are directed to select their colors, trace a shape, add lines with a ruler, and color the inside and outside of the shape using different color families from the color wheel.