Having to follow instructions on complex craft projects can improve children's math skills.

必须遵循复杂手艺课程中的指导可以提高孩子的数学技能。

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Another group of helpless children who were simply rewarded for their success on easier problems did not improve their ability to solve hard math problems.

另一组无助的孩子仅仅因为解决了简单的问题就得到了奖励，这样并没有提高他们解决数学难题的能力。

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Starting from this year, science will become an important subject as Chinese and math in primary schools in order to improve students' knowledge about the things around us.

从今年开始，科学将成为和小学语文和数学一样重要的科目，以提高学生对周围事物的认识。

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So I need you to help me recruit 100, 000 new math and science teachers, improve early-childhood education, give 2 million workers the chance to learn skills at the community college that will lead directly to a job.

WHITEHOUSE: Remarks by the President at Campaign Event in Madison, WI

So, New Hampshire, I need you to help me recruit 100, 000 math and science teachers, and improve early-childhood education, and give 2 million workers the skills they need at community colleges, and help colleges and universities cut tuition growth in half over the next 10 years.

WHITEHOUSE: The White House

Help me recruit 100, 000 math and science teachers within 10 years and improve early-childhood education.

WHITEHOUSE: The White House