Puzzle Fun with a Perimeter Magic Triangle

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

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