Head of the research organization: The math book for grades 1-2 in elementary school is published in two volumes, the first volume is intended for the first 3 to 4 months and the second volume is for the rest of the academic year.
Head of the research organization: The math book for grades 1-2 in elementary school is published in two volumes, the first volume is intended for the first 3 to 4 months and the second volume is for the rest of the academic year.
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