This is a great way to introduce mathematical concepts through play. Children can use their problem-solving skills to complete the puzzle. When they are ready and are showing interest, you can begin to discuss the concepts of fractions and talk about how many pieces make up a whole, half and quarters, for example. A great toy that can be used as a simple puzzle in the early years and reintroduced when children are ready to learn about mathematical concepts. This set contains fractions from 1 whole to 1/10.