4 . To know parents’ influence on students’ learning, researchers studied 438 kids and their parents. Before a school year started, the researchers asked parents to write down how anxious they would feel in different situations connected with math like planning their money spending or checking their house’s size. They also checked their children’s math ability and math anxiety in a school year.

The study found kids whose parents were anxious about math learned less math over the school year. And these kids didn’t perform as well on the tests as those who hadn’t been exposed to math anxiety. Besides, these kids also were more likely to become nervous about math themselves. But these kids only “ caught ” that anxiety if their parents had often tried to help with their homework. This is an example of good intentions having a bad result.

The study’s result appeared in Psychological Science. Erin Maloney led the study. As someone who has personally experienced math anxiety, she says, “ I was always very nervous about math, not only taking tests but also learning the new concepts. So I really tried to balk at math, including finding excuses to miss math tests and not wanting to do math homework. ” It was only after she saw how math could be applied to her passion that she started to enjoy math.

Parents with math anxiety should still support their kids as the kids work on math homework, though. But they should know helping kids with schoolwork requires more than just going over facts and concepts. Parents should help kids look for ways to have fun with math, like playing math-based games. When kids have difficulty in learning, encourage them to bravely face it but don’t make them nervous.

What can students do if they’re already nervous about math? Maloney says, “ My earlier study showed that students who wrote about their fears of math for 7 to 10 minutes before taking a math test performed better on that test. After the writing process，many students said their fears weren’t such a big deal. ”

5 . Zhang Guimei, who has ________ her 40 years to education in a China’s southwestern area, is a “mother” and headmaster who has ignited (点燃) the hopes of many girls with the light of ________.

At 17, she left her hometown Heilongjiang for Yunnan province. While teaching in Huaping county, she saw many girls ________ of school due to poverty. It saddened her very much and made her ________ that an educated female is able to change the situation of poverty in a family and even the fate (命运) of three generations. In 2002, Zhang was ________ to build a free all-girls high school, in hope of changing the future of the girls in the mountains and lifting them out of poverty.

In 2007, Zhang ________ a report in Beijing at the 17th Communist Party of China (CPC) National Congress. Her report “I have a dream” made her dream of building a free all-girls high school ________ to all.

A year later, Zhang’s school was ________, becoming the first free all-girls high school in China. Before it was set up, less than 50 percent of the students in Huaping took high school entrance exams. However, the figure ________ to over 90 percent last year. In the past, rural girls in the county often had no choice but to ________ at a young age. Today, an ________ number of them are going to high schools for education. During the past 13 years, the school has helped over 1,800 students ________ their dreams of going to universities.

Due to her selfless work, Zhang was ________ CPC’s top honor July 1 Medal at the Great Hall of the People in Beijing. At the ceremony, she said: “The things we have done are what many CPC members are doing every day. ________ I’m still capable, I will stand in the classroom to give my all, which I will never ever ________” she remarked.

6 . Charity is simple in theory: A heart warms, a hand reaches out. In practice, though, charity can become a troubled mix of motives (动机) and consequences. Giving can be driven by guilt (负罪感), duty, praise, or perhaps the hope that giving will somehow make up for past cruelty (残酷) or ignorance. Too little charity is far less than valuable. Too much can cause dependence, which makes the receiver continuously ask for more.

Giving from the heart is good. But critics (批评家) have long worried about misdirected charity that does more harm than good. In his 2012 book, Harmful Charity: How Churches and Charities Hurt Those They Help (And How to Solve the Problem), Robert Lupton, an experienced social worker of 40 years of community work in inner-city Atlanta, argues that charity must not do for the poor what they can do for themselves.

Due to emergencies such as natural disasters, the afterward financial aid is greatly welcome. Mr. Lupton advocates (提倡) it should focus on the development of self-supporting. The task can be carried out via, for instance, offering microloans (小微贷款), hiring local builders and suppliers, and trying to found self-supported, locally owned and operated factories. What seldom works, he argues, are untargeted handouts from far-off providers and the sudden arrival of inexperienced volunteer-tourists hoping to earn personal reputation by digging wells or mending roofs that locals are perfectly able to take care of themselves.

Getting charity right isn’t easy. But from money raising to the rising in volunteering among Millennials (千禧一代), from the increasing worldwide willingness to give to the efforts by charity organizations to become more effective and fruitful, there is strong evidence that human beings’ ability of taking care of others is growing along with their ability to help without harming.

Charity can be as simple as holding the door for a stranger and as complex as a global campaign to get rid of malaria (疟疾). Charity works best when it returns the weak to strength, and helps a small town shaken by an earthquake get back on its feet. A successful charity is one that eventually is no longer needed.

7 . Too much screen time for kids can lead to poor health the American Heart Association (AHA) says. A scientific statement published by the AHA in the medical journal Circulation said screen time from smartphones, tablet computers and other devices can lead kids to a sedentary(惯于久坐不动的) lifestyle ,increasing the possibility that they grow up as overweight or obese(肥胖的).

The AHA is the latest organization urging parents to limit how much time their kids spend in front of screens. It recommends children get one to two hours of screen time each day. Although television viewing among children and teens has dropped, the use of smartphones and tablet computers has surged.

“Although the mechanisms(机制) linking screen time to obesity are not entirely clear, there are real concerns that screens influence eating behaviors, mainly because children don’t notice when they are full when eating in front of a screen,” said Tracie Barnett, a researcher at the INRS-Institut Armand-Frappier Research Centre,in a statement.

Barnett, one of the authors of the statement, also urges parents to keep screens out of kids’bedrooms, raising the fear that too much screen time can affect sleep.

Many studies have warned about the potential (潜在的) negative effects of too much screen time. Last year, a study from researchers at San Diego State University(SDSU) found nearly half of teens who spent five or more hours in front of screens every day experienced long periods of hopelessness or sadness.

Apple, who makes the iOS mobile platform, plans to introduce new tools to devices to help users cut back on screen time. As for iOS 12,iPhones will include a screen time feature where users can control and review how they spend time on their mobile devices. Another company that makes the Android platform will introduce “digital well-being” tools such as screen time limits and a “wind down” option to encourage users to put down their phones before bed.

8 . Studies on the importance of sleep for health and the various effects of not having enough sleep have long been well-known. Being short of sleep can lead to poor memory and daytime sleepiness. It’s also been connected to diseases and weakens immune(免疫的)function. However, more than three-quarters of us fall asleep after 11pm and nearly a third stay up until 1am.

The concept(概念)of sleep procrastination was introduced in a 2014 study by Utrecht University in The Netherlands, which explained that it meant “failing to go to bed at the intended time, while nothing prevents a person from doing so”. If so, it will bring terrible results.

Studies have shown that “bedtime procrastination” is connected with a person’s working life during the day. “They feel out of control in their day life and the night is when they can be free,” says Dr Saliha Afridi. “It is full of things they ‘have to do’ rather than what they ‘want to do’. ” Studies have also found that increased working hours and the reduced leisure time may cause much stress and sleep procrastination. On occasion, people have trouble with feelings, concern and loneliness, so they were controlled by using social media, making them stay up late.

So how to avoid it? People should avoid thinking too much before bedtime and stay away from digital devices. Besides, taking a warm shower before bed and going to bed at the intended time are also important.