Учебник языка пятый класс комарова. на странице 120 выполнить все .

Ken Halla knows a thing or two about using technology in the classroom.

For the past 5 years, the 22-year teaching veteran has worked to transition his ninth-grade World History and AP Government classrooms into a mobile device-friendly environment where students can incorporate the latest technology into the learning process. Along the way, Halla created three of the most used education blogs in the country—“World History Teachers Blog,” “US Government Teachers Blog,” and “US History Teachers Blog”—to help fellow humanities teachers incorporate more technology and more device-based learning into their own classrooms.

“Not every classroom can get a laptop every day, so [devices like smartphones], even if you have to pair up, become something useful for teachers,” Halla says.

“The number of kids with phones has just been blown out of the water the last couple of years,” he adds. “Two years ago, if any of the kids in my room had a phone, it was a dial-phone that maybe they could text on. And now it’s all smartphones.”

According to data compiled by the research firm Nielsen, 58 percent of American children from 13- to 17-years-old owned a smartphone as of July 2012—an increase of more than 60 percent over the previous year. And with over 50 percent of mobile phone users in America now using smartphones, the numbers only seems to be growing.

With their easy internet access, a multitude of education-friendly apps, and the ability to be used at a moment’s notice (after all, what smartphone-owning teenager would go anywhere without their phone?), smartphones have all the tools necessary to boost student learning.

Here are Halla’s top tips for using mobile devices effectively in the classroom.

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I think these tips will help save our planet:

1. Close the tap when brushing your teeth

While you brush your teeth with the tap open, about 19 liters of water a day flows into the sewer.

2. Switch off the chargers at night

Usually electronic devices are fully charged in one to two hours. When we charge them at night, they consume much more energy than they need. This is bad for your device, electricity bill and the environment.

3. Throw garbage in the trash

Usually there are garbage cans in cities at every turn. Of course, many people are now aware of not littering on the street, but it is important not to be afraid / lazy to make remarks to other people who throw garbage on the street.

4. Sort garbage

If there are no distributed garbage cans for different garbage near the house, you can separate the paper and hand it in for waste paper.

Interesting to know:

The paper decomposes in 2-10 years.

Cans - 80 years.

Plastic bags - more than 200 years.

Plastic - 500 years.

Glass - 1,000 years.

5. Print on both sides of the sheet

125 million trees are cut down every year to make paper. And how many unnecessary newspapers and leaflets are in mailboxes and just on the streets of our cities…

6. Use an eco-bag or one package

In supermarkets we pack everything in separate packages that will decompose for many years. You can not pack everything in separate packages. Or buy (sew) one reusable fabric eco-package. This will also save you a lot on packages.

7. Close windows and doors when the air conditioner is running

This will make the air conditioner several times more powerful and save electricity.

8. The water in the kettle should not be more than necessary

Excess electricity is used to heat excess water.

9. Do not buy a large live Christmas tree for the New Year and Christmas, limit yourself to a small Christmas tree made of tied pine branches and (or) Santa Claus, so you can support the Ukrainian tradition

There is no buyer, no seller, there are pine forests.

10. Do not dispose of batteries, but give them to special collection points

Once in the ground, the battery can contaminate 400 liters of water or 20 square meters of soil. Throwing only two old batteries out of a flashlight, you will ruin two baths, 8 buckets and a half kettle of clean water.

11. Do not drink water from plastic bottles

90% of plastic bottles are not recyclable. If possible, buy juice in a paper package, or pour water at home and use one bottle several times, because most "mineral waters" are not mineral at all, but table water, which is no different from tap water. Moreover, when liquids are in a plastic bottle for a long time, they are not useful for the human body.

12. Take an advertising brochure

In order not to transfer the paper, you can take the brochure home and put it in the paper, and then hand it in for waste paper or in a pile of paper waste.

Interesting to know:

One family of three collects 15 kg of waste paper per year.

1 kilogram of waste paper is 60 kg of wood.

13. Buy local

When you buy products manufactured by the manufacturer who lives closest - you reduce the cost of fuel (energy) to transport products from manufacturer to store. Also in this way, you will support local producers, which is very much needed in our country now.

14. Ride a bicycle

Feel in good physical shape, healthy, energetic, fashionable, move around the city quickly. And it's all thanks to the bike. And also reduce harmful emissions into the air.

15. Use ceramic or paper utensils

It is very nice to sit in a park or forest on a picnic, but it is better to sit there without garbage from plastic utensils.

16. Wear natural clothes

Synthetics are a product obtained by the method of chemical synthesis, from which plastics and fabrics are made. Therefore, we can say that synthetic clothing is as harmful as plastic bottles. Especially since clothes made of natural materials are much more pleasant to a body and, unlike synthetic fabrics, warm.