It involves a lot (really a lot!) of cutting and folding, but the results are great. I had to use a little glue (but only to connect the hexagons) to make it sturdier and easy to handle.
Below you can find a detail of the modules I used (measurements in inches are approximate, I actually used a metric ruler to get more precision). The diameter of the finished ball was 55 cm (21 5/8")
- 20 Hexagon modules, folded from hexagons cut from 140 mm (5½") squares of white copy paper.
- 12 Pentagon modules, folded from pentagons cut from 79 mm (3 1/8") squares of light blue copy paper.
- 30 Hexagon to Hexagon connectors, folded with 61 mm x 70 mm (2 7/16" x 2 ¾") rectangles of white copy paper.
- 60 Pentagon to Hexagon connectors, folded with 35 mm (1 3/8") squares of white copy paper.