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Build a TetraTREEdron

A tree, with a mathematical twist! Discover how to build a tetrahedron from a net, then join 4 (or more!) tetrahedrons to make a Sierpinski tetrahedron. We call these TetraTREEdrons!

Materials you will need

  • Tetrahedron Template (available to download above)
  • Plain paper, pencil and ruler
  • Scissors
  • Glue
  • Colouring pens, pencils or crayons
  • Sellotape
  • Further crafty decoration items (optional)

Win a pack of Number Rumbler!

Take part in our 2021 Festive TetraTREEdron project and see your creation in our online gallery! Take a picture of your finished Sierpinski tree and upload it to social media by 31st December 2021 and you might win a pack of our brain-fizzing family maths card game Number Rumbler! Don’t forget to tag us @mathsontoast to be in with a chance of winning – there are 50 packs up for grabs!

Download the tetrahedron template

Tetrahedron Template

Find out how to take part in our 2021 Festive TetraTREEdron Project

2021 Festive TetraTREEdron Project Activity Sheet

Submit your TetraTREEdron to our online gallery