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The series "2 in 1. Reference and Training Manual. Grades 1-4" series will help your little schoolchildren make confident steps in learning their first school subjects. The reference information, structured and conveniently placed in the book, will help children master the basic material, and the moving circles-simulators will bring a playful moment to learning and help to consolidate the acquired knowledge. This format of the publication will help children to better remember and increase their interest, as well as develop attention, coordination and fine motor skills.