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Check. Motion
EduBook Organización
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Remember what you have studied in this section and answer the questions: Why do we need an origin as a reference point to know the position of a moving object? With a classmate, say what trajectories…
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10 Free Mobile Apps To Help You Learn English Faster
jose lucio Docente
1 lo usan

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Learning a language is one of the most rewarding things you can do. There are a lot of ways you can learn or improve your skills in a particular language, from attending classes to teaching yourself…
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Conditionals and future quiz
Tiching explorer Organización
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The 6 sentences we have to complete here are about future perfect, future continuous, past perfect and first, second and third conditionals. It gives us some brief grammar feedback, a final score and an…
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Video: European Union Enlargement
Esl video Organización
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This 4 minute video from The Economist is a brief summary of the history of the European Union. It explains at which stage the members entered or are going to join and it outlines a future scenario.…
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Video: Catalysis
Tiching explorer Organización
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This animation shows how reactions are driven by energy changes and how enzymes, as catalysts, increase the rates at which reactions take place. By hovering with our mouse over the reactions we can…
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True/False. The revolution of the Earth
EduBook Organización
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Answer true or false: When it is spring in the northern hemisphere, it is summer in the southern hemisphere. When it is summer in the northern hemisphere, it is winter in the southern hemisphere. The…
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The nuclear energy debate
EduBook Organización
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The earthquake and subsequent tsunami in Japan in 2011 severely damaged the Fukushima nuclear power plant, causing radioactive leaks. This event has reopened the debate about nuclear energy. In…
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True / False. The Spanish Civil War
EduBook Organización
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Are these sentences true or false? The Spanish Civil War took place between 1914 and 1918. During the war, the Spanish people were divided into Nationalists, Republicans and Monarchists. In 1936, a coup…
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Complete. Inhaling and exhaling
EduBook Organización
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Complete this text with the correct words: Air is renewed in the pulmonary alveoli of the lungs when we and . We use a large muscle called the and the muscles. The diaphragm is located below the . It is…
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The scientific method - Introduction
EduBook Organización
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5. About the scientific method What method do scientists use to formulate a theory or test a hypothesis? The development of cell theory can be used to explain the stages of scientific inquiry.…
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