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 What is Picture Land?

In Picture Land, number words are applied to stylized representations of objects, which are equivalent to mathematical sets. Picture Land's dot set patterns (like the ones used on dice and playing cards) are half way between the world of moveable objects and the world of abstract symbols. Picture Land representations - unlike the real objects they represent - can not be physically placed in one to one correspondence for easier comparisons. Instead, one must make a mental correspondence between two sets, for example by noticing that the pattern of 5 is the same as 4, but the 5 pattern has one extra dot in the center. As children engage in the Picture Land activities, they will gradually come to think of these patterns as forming the same sort of ordered series as do the number words themselves. Numerals, another way of representing numbers, are also part of Picture Land.