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The teaching contents of the second volume of Grade Three mainly include: division of divisor is a single digit, multiplication of two digits, preliminary understanding of decimal, position and direction (1), area, year, month, day, compound statistics, solving problems with mathematics, wide angle of mathematics and comprehensive practical activities. The second volume of the third grade of mathematics was published by People's Education Press on June 20 14? , compiled by People's Education Publishing House and the Research and Development Center of Primary Mathematics Curriculum Textbooks of Curriculum Textbooks Institute.