虽然我在6年级数学很感兴趣，我的数学很差。
Though I was interested in math in Grade 6, my math was poor.
七年级数学要学的东西确实挺难：比例、小数、平行四边形的面积。
The kinds of things you need to learn in seventh grade math, sure, they're hard: ratios, decimals, the area of a parallelogram.
这是不够的新的计算机有过大 （并显然中伤） 对四年级数学成绩的影响。
That was enough for the new computers to have had a large (and apparently malign) influence on fourth-grade maths scores.
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