1. Watch the video showing the changes to Piet Mondrian’s artistic style over the course of his lifetime. 2. Click the to begin your art piece. 3. Use the to place the horizontal and vertical black lines in different sizes and places around the white background. 4. Use the and primary colored rectangles to fill in some of the spaces you created with the black lines. 5. Use to name your artwork. 6. Click to submit your artwork.