12 to 13 year-old students. One working session.
ORIGAMI IS COMING…
HOW TO DO A TRUNCATED DODECAHEDRON
Things you need:
�
�
� Two colours of paper (80g)�
� Scissors�
� Ruler�
Directions: 1
�
�
� Draw on a sheet of paper a pattern of some equal equilateral triangles of
sides of at least 6 cm.�
� Cut the triangles with caution. They should be exactly equal to make a
perfect geometric shape.�
� You will work with two different colours of paper. Take the triangles and
fold them all sharply along their three axes of symmetry. Later, unfold them
all. Can you see the lines of symmetry? You should see something like
picture 2.�
2 3
� Now, it’s time to convert the triangle into a 3D-figure. Press on the middle
point of each side of the triangle until you make a kind of windmill, as the
picture 3 shows.�