The 1st Pixel Art activity focuses on students finding the circumference of a circle given the radius or the diameter. This activity was made for Pi Day but could be used any time. This is a basic level activity. The 2nd pixel art activity focuses on students finding the area of a circle given the radius or the diameter. This activity was made for Pi Day but could be used any time. This is a basic level activity. Circumference of a Circle Pixel Art Area of a Circle Pixel Art Pi Day Pixel Art Template