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Dice, Die, probability

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3D model description

Four slightly different types of dice, made for teachers. Each one is 20mm^3. The dents are made using about 45-degree cones for easy printing. This is also a simple starting project for someone to learn about 3D design-- cube, sphere, cones, alignment, cut, and intersections. Have fun!

I initially made these dice without considering the traditional sum-of-seven configuration (6 and 1 are on opposite sides). I am not mathematically convinced that the numbers have to be arranged that way for fairness beyond the balance of numbers. Theoretically, the one (1) hole should be much bigger to balance the holes on the opposite side. Physically, I think we might need to balance the center of mass. Anyway, I added a traditional set. Thanks for the feedback and support.

3D printing settings










5% to 25%

The dice are easy to print using standard parameters. One can print one by one or print an array of 16 dice.

3D printer file information

  • 3D design format: STL Folder details Close
    • dice_array_16.stl
    • dice_array_16B.stl
    • die_v1.stl
    • die_v2.stl
    • die_v3.stl
    • die_v4.stl
    • traditional_sum_7_array_16.stl
    • traditional_v1.stl
    • traditional_v2.stl
    • traditional_v3.stl
    • traditional_v4.stl

    Learn more about the formats

  • Publication date: 2017/12/26 at 15:32




STEAM educator, learning from and working with K-12 STEAM teachers to explore new ideas of teaching and engagement. I firmly believe ART is at the core of STEM learning or all human learning! I owe my ideas and designs to the hundreds of K-12 children and teachers and university professors I have had the pleasure of working with, in multiple disciplines-- math, science,engineering language arts, social studies, early childhood education and more! All mistakes, of course, are mine! There is no warranty or liability whatsoever implied or explicit behind the designs or ideas. They are all posted for their potential educational values.

When working with children, please strictly observe all safety and health procedures! Please refer to the NSTA safety guides:


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