Gift 5 consists of a 3-inch cube divided into 21 one-inch cubes, 6 triangular prisms (half-cubes), and 12 quarter-cube triangular prisms. Gift 5 represents a larger 3-inch cube version of Gift 3, which is divided into more pieces and a larger variety of shapes. Dividing the cubes into halves and quarters introduces the triangular prism. Because Gift 5 is part of larger group of materials it does not come with written instructions when sold separately like this. Instructions for Gifts 1-6 can be found here. This set contains small triangular pieces that may pose a choking hazard for young children. Made in USA. For ages 3+. WARNING: CHOKING HAZARD: Small parts. Not for children under 3 yrs.