HKMEC 2015

Edukien zerrenda

• miscellaneous

  • 9 pin geoboard
  • twelve around one
  • a triangle ABC cut into 2
  • another triangle ABC cut into 2
  • Ratio
  • Parthenon

• octagons

  • Octagon in a square 1
  • Octagon in a square 2
  • Octagon in a square 3
  • Octagon in a square 4
  • Octagon in a square 5
  • Octagon in a square 6
  • Octagon in a square 7
  • Octagon in a square 8

• tiling

  • Cairo Tiling 1
  • Cairo Tiling 2

• textbook

  • find two congruent triangles
  • Find 2 similar triangles
  • exploring tangent-chord angle
  • circles