8 Reduce,Reuse, Recycle

Unit 8 VOCABULARY 1 1 Listen and read. Every day we make trash. Where does it go? Some of it is buried in landfills. Yuck! There has to be a better way. There is! You can choose a way of life that works with the environment. You can conserve instead of throw away.You can make energy-efficient choices. The three Rs of the environment are reduce, reuse, and recycle. We all know about recycling. Man-made things are crushed and melted down. They are then made into new things. The best Rs are to reduce and reuse. Reduce by choosing to use less energy. Reuse by finding new uses for junk. Choosing natural materials is friendly to the environment. Things made from natural stuff are cool. When they are used up, just like other trash, they go into the landfill, too. But they break down faster. And natural things can be grown again. They’re renewable. Can we design things to reduce, reuse, and recycle? Yes! We can build houses that are energy efficient. We can make art with natural things, or reused things. The possibilities are endless. 2 Listen and repeat. trash Throw it in the trash. a landfill Most trash ends up in landfills. environment It’s important to keep the environment clean. conserve We should conserve water. throw away Don’t throw away toys that are still good. energy-efficient An energy-effi cient refrigerator uses less electricity. reduce Let’s reduce the number of lights we use. reuse We can reuse bags. recycle You can recycle soda cans. man-made Plastic is a man-made material. junk When a car can’t run anymore, it becomes junk. natural Clothes can be made from natural things like cotton. renewable Wind is a renewable resource. design We must design cars to use less energy. build He wants to build a house that uses heat from the sun.

SONG 1 Listen, read, and sing. The Three Rs When you’re walking to the trash can with some old stuff in your hand, you might want to stop and think again. Can this be reused or given away? Let’s start taking care of our world today! Reduce. Reuse. Recycle. Do it every day. Don’t throw everything into the trash when clearly there’s another way. Reduce. Reuse. Recycle. Help keep our world clean. Do your part every day to make our world green! Recycling is easy when you know what to do. Glass? Paper? Metal? These things can be reused, again, and again, and again! When you’re walking to the trash can with some old stuff in your hand, you might want to stop and think again. Can this be reused or given away? Let’s start taking care of our world today! Compost your uneaten food. Composting isn’t hard to do. Natural things can be reused when they get a helping hand from you! Reduce. Reuse. Recycle. Do it every day. Don’t throw everything into the trash when clearly there’s another way. Reduce. Reuse. Recycle. Help keep our world clean. Reduce. Reuse. Recycle.

GRAMMAR 1 Passive with modals (simple present) Natural things can be grown again. Many things can be made into art! Aluminum cans must be melted to be recycled. Some plastics may be put in recycling containers.

VOCABULARY 2 1 Listen and repeat. chemicals Those chemicals are bad for the environment. cardboard Cardboard is made from paper. metal Cans made of metal can be melted. glass Glass bottles can be recycled. tools We use tools to build most things. 2 Listen and stick. Different things are recycled in different ways. But all recycling needs one thing: tools. Tools are needed to separate, to cut, and to melt. Tools are needed to cut up recycled things quickly. Then they can be made into something else. An easy thing to recycle is cardboard. Cardboard is mixed with water. It breaks down in the water. Then tiny pieces of wood are added to make it strong. It can then be used to make other things. Another thing to recycle is glass. First the glass is separated by color. Then it’s washed. Next the glass is crushed. And the crushed glass is melted. Then it can be made into other things. Before it is recycled, metal is separated into different types. The metal is then melted at high temperatures. The temperature depends on the type of metal. Then the metal can be used again. Finally, we should reduce our use of chemicals. The chemicals we use go into our water or into the ground. Try to use chemicals that are safe for the environment. GRAMMAR 2 Clauses with when When we recycle trash, we save on materials and energy. An artist’s work may surprise us when we first see it.

READING 1 Listen and read. Found Art We often think of reusing and recycling as something we just have to do. But some people see it as a chance to create. Any object can be reused to make something amazing. Reusing is more than a way to save—it can help us think about things in new and different ways. Using found stuff to make art is not new. Found art became popular in the 1900s. Found art made people think about the things around them in a different way. Many things could be made into art! Today many artists still make art from things they find. Sometimes they use things as they find them, and other times they make changes to the things they find. Sometimes they use junk. The trash from our homes has plenty of metal, plastic, rubber, and cardboard. Artists might use old toys, or objects they find on the beach, or old electrical equipment. The Korean artist, Yong Ho Ji, makes sculptures from old rubber tires. His sculptures are usually of realistic or imaginary animals. Brian Marshall, an American artist, makes sculptures of robots using objects he finds. The artists put it all together to express their thoughts. We can enjoy their creativity and be amazed at the artists’ skill. We can also be surprised by our feelings. Often we can just appreciate the beauty or the humor. All these things make found art valuable in our lives.