These kits contain directions and colored cards to make multicolored models of the polyhedrons listed below.  The nets are printed on colored cards.  The accompanying directions give detailed instructions for scoring, cutting and assembling the models.  PO4 is the most popular kit; it is the easiest to make (all pieces are one color) and the most fascinating to students.  The polyhedron patterns may be duplicated for classroom use.  Colored card stock for duplicating, at least 65 lb. weight, may be purchased at any office supply store.