Engineering Challenge: Triangle Tower: Design and construct a tower made entirely of triangles that stands on its own using only straws and tape.

Materials:

  • Straws
  • Tape
  • Scissors (optional)

Instructions:

  1. Understand Why Triangles Are Strong:
    • Triangles are one of the strongest shapes in engineering because their sides support each other and prevent collapse.
    • Many real-world structures (like bridges and towers) use triangle frameworks for stability.
  2. Build Basic Triangle Units:
    • Take three straws and form a triangle, securing the corners with tape.
    • Make multiple triangles (at least 6 to start) to use as building blocks.
  3. Connect Triangles to Form a Base:
    • Use taped connections to join several triangles together and form a stable base.
    • A wider base will make the tower stand more securely.
  4. Stack Triangles to Build Height:
    • Place triangles on top of each other, taping them together to build upwards.
    • Consider making pyramids or tetrahedrons for extra stability.
  5. Test & Improve Stability:
    • Gently push your tower—does it wobble?
    • Strengthen weak areas with extra tape or cross-bracing.
    • Try different designs to see which stands the tallest without falling!

Challenge & Reflection:

  • Why do engineers rely on triangles in real-world structures?
  • What happens if you change the shape of your base—does a square foundation work better?
  • Can you make the tallest possible tower while keeping it stable?