There are 12 different ratios represented in each set. These are shown in four different ways: as a set of dots, as a ratio, as a fraction and as a percentage. The aim of the game is to match up all four representations of each one.
The 48 cards in each set can be used in different ways.
1) Simply match up the four representations of each ratio
2) A rummy type game in which 2 or 3 players ask for a fraction or ratio that they need to complete their set. The winner is the player with the most complete sets at the end of the game.
3) A pelmanism type game in which the dot card and one of the other cards from each set are placed face down. Players take it in turns turning over two cards and keep the ones that match.
Set 1 uses simple ratios, fractions and percentages with either two or three different coloured dots represented in each ratio.
Set 2 uses up to four different colours in each ratio and more difficult fractions.
A design for the backs of these cards is included to prevent the two sets from becoming mixed up.
NB: Children need a basic understanding of fractions, ratio and proportion before attempting to use these cards.