A few changes about how a teacher runs a classroom can make a huge effect on how concentrated students will be in that classroom. It’s an issue every teacher has to face. 【小题1】 Here are just a few of my methods.

●Rearrange (重新布置) Seats.

I did the seat rearrangement because class conversation had become dull, and students just seemed to be there but not actually there. 【小题2】 I had all of my students pick new seats at the tables. The rules were simple. They could not sit with more than one other person they’d already sat with, and it had to be at a different table.

● Take over a Lesson.

Once in a while, it can be fun to let the students take over a lesson in a unit. Let them become the teachers, and the teacher becomes the student. You can provide the topics they need to cover. 【小题3】

● Have Open Projects.

Open projects have been very successful in my class. 【小题4】 I used to dictate (指定) every part of my project tasks. Students would ask to do things a little differently. And I’d give in, surprised that their ideas were better than mine.

● 【小题5】

Sometimes teachers forget to bring the fun to the classroom. We try so hard to cover the courses for our students until they break down. Sometimes it’s good to just set things aside for a day or two and have some fun.

   Fights at school have become an increasingly familiar sight for children. You should know what to do if you are in a fight, or see a fight at school. 【小题1】

You should try to get away if you can. If you know someone is coming up behind you to attack, turn toward the person with your hands up in front of your body and loudly say “stop” before walking away. 【小题2】 If the person doesn’t stop, cry for help by calling out the name of a teacher whose office is nearby.

【小题3】 In some school areas, everyone involved in a fight can be punished, no matter who started it.

What should you do if you see a fight? You mustn’t jump in to break up a fight or help a friend. If you get involved in a fight，you may suffer injuries and punishment. 【小题4】 It’s a good choice to find an adult or call the police. Shout loudly to break up the fight or warn that an adult is coming.

【小题5】 It only provides temporary（临时的）relief for the attacker and causes more trouble. If you are concerned about fights at school, the best thing you can do is talk to an adult who will listen and take action.

   In the United States alone,over 100 million cell-phones are thrown away each year.Cell-phones are part of a growing mountain of electronic waste like computers and personal digital assistants.The electronic waste stream is increasing three times taster than traditional garbage as a whole.

Electronic devices contain valuable metals such as gold and silver.A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste,the concentration（含量）of gold and other precious metals was higher in So-called e-waste than in naturally occurring minerals.

Electronic wastes also contain many poisonous metals.Even when the machines are recycled and the harmful metals removed,the recycling process often is carried out in poor countries,in practically uncontrolled ways which allow many poisonous substances to escape into the environment.

Creating products out of raw materials creates much more waste material,up to 100 times more,than the material contained in the finished products.Consider again the cell-phone,and imagine the mines that produced those metals,the factories needed to make the box and packaging（包装）it came in.Many wastes produced in the producing process are harmful as well.

The U.S Environmental Protection Agency notes that most waste is dangerous in that"the production, distribution,and use of products-as well as management of the resulting waste-all result in greenhouse gas release." Individuals can reduce their contribution by creating less waste at the start-for instance,buying reusable products and recycling.

In many countries the concept of extended producer responsibility is being considered or has been put in place as an incentive（动机）for reducing waste.If producers are required to take back packaging they use to sell their products,would they reduce the packaging in the first place?

Governments' incentive to require producers to take responsibility for the packaging they produce is usually based on money.Why,they ask,should cities or towns be responsible for paying to deal with the bubble wrap（气泡垫）that encased your television?

From the governments' point of view,a primary goal of laws requiring extended producer responsibility is to transfer both the costs and the physical responsibility of waste management from the government and tax-payers back to the producers.

   Building Trust in a Relationship Again

Trust is a learned behavior that we gain from past experiences. 【小题1】 Trust is a risk. But you can’t be successful when there’s a lack of trust in a relationship that results from an action where the wrongdoer takes no responsibility to fix the mistake.

Unfortunately, we’ve all been victims of betrayal. Whether we’ve been stolen from, lied to, misled, or cheated on, there are different levels of losing trust. Sometimes people simply can’t trust anymore. 【小题2】 It’s understandable, but if you’re willing to build trust in a relationship again, we have some steps you can take to get you there.

●【小题3】 Having confidence in yourself will help you make better choices because you can see what the best outcome would be for your well­being.

●【小题4】 If you’ve been betrayed, you are the victim of your circumstance. But there’s a difference between being a victim and living with a “victim mentality”. At some point in all of our lives, we’ll have our trust tested or violated.

●You didn’t lose “everything”. Once trust is lost, what is left? Instead of looking at the situation from this hopeless angle, look at everything you still have and be thankful for all of the good in your life. 【小题5】 Instead, it’s a healthy way to work through the experience to allow room for positive growth and forgiveness.

   Penguins are the number-one attraction for many visitors to Antarctica. If you go on a ship that is allowed to make shore landings, you may see them. But to get a close look at penguins, you have to be smart.

First of all, keep in mind that Antarctica’s visitor rules require that you remain at least five meters away from the penguins in order not to disturb them. You could easily become responsible for the death of a little penguin or the destruction of an egg if your too-close presence should disturb a penguin parent.

If a penguin is trying to move away from you, you must stop what you’re doing and back off even if you’re farther than five meters away. However, the rules don’t prevent a curious penguin from approaching within five meters of you — as long as the bird makes the move, not you.

Little penguins, in particular, are quite curious. I’ve seen several lucky tourists who were astonished to find that little penguins came right up to them. If a penguin comes extremely close to you, remember that you are not allowed to touch or hold it.

Here are more tips for getting close to penguins.

Ignore the smell: where penguins live is filled with guano（海鸟粪）and the smell takes some getting used to.

Be quiet because loud noises make penguins nervous. Fast or sudden movements signal meat — eating animals to penguins, and they react accordingly, so slow down when you walk around them.

Since it may take half an hour or more before the penguins get used to you, you need to be patient. Put away your camera — too often people are so focused on getting the pictures that they forget to look with their own eyes, but most of your most memorable experiences in Antarctica will be marked in your mind, not on a roll of films.