This 16 slide PowerPoint provides specific step-by-step instructions for creating a 3-D, 20-sided geometric solid which is known as an icosahedron. It can be used as an excellent math extension activity or as an entertaining craft project. Each face is an equilateral triangle which is created on a circle to provide a mathematical and decorative effect. Teachers and students alike will find it easy to follow the fully illustrated directions. The author created this presentation by taking photographs during every step of the procedure and writing corresponding, detailed instructions.This presentation depicts creation of the icosahedron as a Christmas ball project. It can be constructed with regular paper for any time of the year.