Active Time
20-30 minutes
Total Project Time
20-30 minutes
Key Concepts
Counting, addition, strategizing, pattern recognition

Introduction

Do you ever use math as a tool to solve interesting problems? In the 1970s math was often taught with simple worksheets. One teacher developed an exciting way to learn math and logic; he developed what is now known as the perimeter magic triangle puzzles. Try them out—and have some fun as you start thinking about counting in a whole new way!

Credits

Sabine De Brabandere, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

Materials

  • Magic triangle template or materials to make one yourself:
    • Two sheets of 9 by 12-inch paper, such as construction or craft paper (if possible, choose contrasting colors)
    • Pencil or marker
    • Ruler
    • A quarter or other round object of similar size
  • Scissors
  • 21 pennies, small blocks or other small stackable objects
  • Option: More sheets of paper
    Materials needed to make the perimeter magic triangle puzzles

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Active Time
20-30 minutes
Total Project Time
20-30 minutes
Key Concepts
Counting, addition, strategizing, pattern recognition
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