Join Portland Children's Museum to honor the longest number in the world! Pi is the ratio of a circle's circumference (the distance around) to its diameter (the distance straight through). Since ancient times, a circle's circumference was known to be just a little bit more than three times its diameter: 3.1415. Pi has been calculated to over one trillion digits past its decimal point. Pi Day is a great day to celebrate the fun of circles, and Albert Einstein's birthday, too!
Pi-themed activities include:

  • Mud Pies in the Clay Studio: Create clay pies with pie pans, rolling pins, and circular cookie cutters.
  • Paper Pi Chain: Help us make a paper chain for as many digits of pi as possible! Add your link of the paper color that corresponds to 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9, and let's see how far we can go.
  • Circle Art: Experiment with spirographs, compasses, circle templates, and adhesive dots to create your own circle art.
  • Parachute play in Outdoor Adventure
  • Circle Sensory Bin: Squish, splash, and play with water beads and other round things.