Some parents will buy any high tech toy if they think it will help their child, but researchers said puzzles help children with math related skills.

有些父母会购买任何高科技玩具，如果他们认为这对孩子有帮助，但研究人员表示，拼图有助于孩子学习数学相关技能。

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With John's help, Kevin passed math tests successfully, and he seldom bullied anyone.

在约翰的帮助下，凯文成功通过了数学考试，并且也很少欺负人了。

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In 2006, Khan made homemade videos to help his ninth-grade cousin with math.

2006年，可汗自己制作视频，来帮助他九年级的表弟学习数学。

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With Khan's help, the cousin got good at math, and Khan launched a new career.

VOA: standard.2010.03.26

To help with the math, colleges and universities participating in federal student-aid programs are now required to have a net-price calculator on their websites.

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The highlight of her narrative: a story of how our son took time one day to help another student who was struggling with math.

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Sal Khan actually built tools to help his cousin in New Orleans with her math homework.

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