"The Vertical Question Card of Second Grade Oral Calculations" is a book published by Harbin Publishing House, written by Gu Zuofeng.

"Full Score Exercise, Vertical Oral Calculation Card, Grade Two, Grade One" is an arithmetic card used in the first volume of grade two, and its content is the exercises of mathematical equations and algorithms learned in books. All kinds of questions are displayed and calculated in a simple way. From the basic questions, the formula exercises of calculating unit length, addition, subtraction, multiplication and division, and 99 multiplication table are started.