About 10% of school-age children have persistent and significant difficulties with math, while many more fail to reach basic levels of mathematics achievement.
约10%的学龄儿童有着持续明显的数学学习困难，其中很多人数学成绩不及格。
About 10% of school-age children have persistent and significant difficulties with math, while many more fail to reach basic levels of mathematics achievement.
约10%的学龄儿童有着持续明显的数学学习困难，其中很多人数学成绩不及格。
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