Secret:
This trick is based on the fact that when the tops and bottoms of two dice are added together, the resulting sum is always 14. While many people know that the opposite sides of a single die add up to seven, few know, or will be able to figure out that the tops and bottoms of two dice add up to 14. Try rolling a pair of dice and see for yourself.
Preparation:
Open your book to page 14 and write down on the paper the first word on the page. Put the piece of paper into the envelope. Youre ready to go.

