The cards have been designed to be used in a class of 10, 15, 20 or 25 students. A symbol, at the bottom of the cards can be used to sort the cards. • If you use cards with a heart, the set will make one cycle with 25 cards. • If you use cards with a diamond, the set will make a cycle of 10 cards. • If you use cards with a club, the set will make a cycle of 15 cards.• If you use the cards with a spade, the set will make a cycle of 20 cards. Using the symbols you can quickly sort the cards into a