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The Cross Note that protect errors of calculation and improve the ability of dividing space when they study mathematics.
The Cross Note that protect errors of calculation and improve the ability of dividing space when they study mathematics.
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机译：十字笔记可以保护计算错误，并提高他们学习数学时划分空间的能力。
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摘要
The present invention relates to a notebook that prevents errors in vertical counting in elementary mathematics arithmetic, and naturally improves the spatial sense and space division ability of letters and numbers. The present invention is a low density concentration across one line in the up and down direction of the lattice-shaped substrate regions (2, 2a) formed by dividing the columns and rows with dotted lines (C) at equal intervals so that one letter and number can be written in one space. The base region 2 in which A) is inserted is made so that the mantissa and the subtractive can be distinguished to facilitate the counting. By dividing the space above and below the operation and the next operation according to the up and down flow of the base area (2, 2a) divided by the above color, the division ability is naturally planted in the children (Figures 6 and 7) who lack space partitioning ability. And diversify the color of the Army part (Fig. 2, Fig. 3, Fig. 4) to have a familiarity with mathematics subjects according to children's preferences. In addition, it is a notebook characterized in that forming a perforated cut line (D) to form a reverse triangular faucet (E) by notching treatment at the upper end of the cut line so that young children can be neatly cut as needed.
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