An individual bingo sheet, which contains 24 numbered squares plus a free space.
Strip
The most common arrangement of cards is a sequence of 3 cards on a vertical strip.
Book
Books are organized in the number of face cards \”on\” a sheet (ONS) and the number of pages \”up\” through a book of glued sheets (UPS). Thus the term 3on 4up means 3 face cards per page on each of a 4 page book or a 1 strip x 4 page book.
