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Free Printable Pi Day Bingo Cards

On March 14, middle school math classes can review circle vocabulary with a round of bingo. The teacher reads a definition or sketches a figure on the board ("the distance from the center of a circle to its edge"), and students cover the matching term. A handful of pie squares are mixed in so the dessert half of the holiday gets a turn.

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Preview. Every printed card is shuffled differently.

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    How to play pi day bingo

    1. Set the number of players, then press Print or save as PDF. Each player gets a different card.
    2. Call items in random order with the built-in caller, or use the printed call list.
    3. Players mark each called square. The first to complete a row, column or diagonal shouts "Bingo!"

    Tip: Start the game at 1:59 to stretch the date into 3.14159, and hand out mini pies or round cookies as prizes. For a harder round, have the winner compute the circumference of a circle you draw before claiming the prize.

    Pi Day Bingo word list

    These 36 items are loaded into the generator above. Edit, remove or add your own before printing.

    • Pi
    • Circle
    • Center
    • Radius
    • Diameter
    • Circumference
    • Area
    • Chord
    • Arc
    • Sector
    • Tangent
    • Semicircle
    • Central angle
    • 360 degrees
    • Irrational number
    • Decimal
    • Digits
    • Ratio
    • 3.14
    • 22/7
    • March 14
    • Greek letter
    • Archimedes
    • Formula
    • Squared
    • Never ends
    • Sphere
    • Cylinder
    • Compass
    • Protractor
    • Apple pie
    • Pumpkin pie
    • Pizza pie
    • Pie crust
    • Slice
    • Whipped cream
    Free printable Pi Day Bingo card: a sample word card ready to print
    A sample card. Yours are shuffled differently for every player.

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    Printing is free for up to 10 cards per game. For classrooms, large showers, fundraisers and company events, the Unlimited Pass prints up to 500 unique cards per game without the site footer, on every theme, for 12 months. It costs $7.99 once. There is no subscription and no account.

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    Questions and answers

    Are the bingo cards really free?

    Yes. You can print up to 10 unique cards per game at no cost, as often as you like, without creating an account. The optional Unlimited Pass is for larger groups.

    How do I save the cards as a PDF?

    Press "Print or save as PDF". In the print window choose "Save as PDF" as the printer. On a phone, use the share or print option in the preview that opens.

    Is every card different?

    Yes. Each card is shuffled separately from your list, so players cannot all win at the same time. The more items your list has beyond the number of squares, the more the cards differ.

    Can I use my own words?

    Yes. Replace the list with your own words or phrases, one per line. A 5×5 card with a free space needs at least 24 items, a 4×4 card needs 16 and a 3×3 card needs 8.

    What paper should I use?

    Normal printer paper works. Card stock lasts longer if you plan to reuse the cards. The layout fits both US Letter and A4.