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The illustrated encyclopaedia of mathematics is best suited for preschoolers and primary school children. The author explains the basic mathematical concepts in clear language and shows where we can encounter them in everyday life. The kids will learn what positive and negative numbers are, how to find out about something they are interested in by performing simple addition or subtraction operations. Illustrations will help them understand numbers and mathematical operations and help them not get bored. Arouse your child's interest in science and experiments with this series!