Pi Fight

  • Pi Fight

    Grade: 6th to 8th, High School

    Pi Fight is designed to help students become comfortable with using both radians and degrees.

    Choose between radians, degrees, or a combination of both to hit Okta, the octopus. 

    This interactive is optimized for your desktop and tablet.



    Choose between radians, degrees, or a combination of both to hit Okta, the octopus.

    Each game is 3 minutes long, and the shot clock starts off with 10 seconds.

    Choose the bubble that corresponds to Okta’s location on the unit circle, and pull back the crab to aim the pie within the halo around Okta.

    For each successful hit, your level will increase by one. Similarly, each miss will decrease your level by 1. There is no penalty for a pass.

    Your current level is indicated in by the level bar; the highest level is 20.

    Each time you move up a level you will have less and less time on the shot clock. Level 1 is 10 seconds. Level 10 is 5 seconds. And Level 20 allows you 1/20 the standard shot time of 10 seconds (yep, half a second!).

    If you struggle, tap on the Hint bar to reveal the radians and degrees.

    At the end of each game, you will have the opportunity to see your—

    • Game mode (A varied game mode indicates switches in modes during the game)

    • Hits

    • Misses

    • Streak (highest number of consecutive hits)

    • Percentage of hits

    We recommend taking screenshots of this scorecard to turn in for formal and informal assessment opportunities.

    Upon starting a new game, the bubbles will be shuffled to ensure any improvement at the game is not occurring by rote memory, but rather through actual learning.



    • Play Pi Fight to try to maximize your percentage. How does this affect your level? 
    • Play Pi Fight to try and maximize your level. How does this affect your percentage? 
    • Attempt to become familiar with all the coordinates on the unit circle. How many can you remember? 
    • Utilize any one of the related resources to implement this game as an extension in your classroom. 

      Objectives and Standards

      NCTM Standards and Expectations
      • Geometry / Measurement
      • Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles.
      • 6-8
      • High School (9-12)
      • Geometry