Recursos educativos make página 164

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Effects of heat on bodies (I)
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3.1. Increase in temperature Heat must be added to increase the temperature of a body. This causes the particles that make up the body to increase their speed. For this reason, the increase in…
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The digestive system (II)
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The mouth The mouth is the opening to the alimentary canal. We use our jaw to open and close our mouth. The inside of the mouth is made up of: Our teeth, which we use to chew our food. Our tongue, which…
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Machines
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Brakes. Vehicles have brakes to reduce speed or stop. Bicycles and cars have brakes. Machines. There are simple and compound machines. They make our work easier. Compound machine. Compound machines are…
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End-of-unit activities - Machines and structures
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at…
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The Palaeolithic period
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The first humans The Palaeolithic period is the first period in Prehistory. The Palaeolithic period began more than two million years ago. Human remains from the Palaeolithic period have been found in…
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Let's learn how to... - Air and the atmosphere
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Observe how air can move water What do we need? A plastic bottle. A plastic tube. A big plastic bowl. Plasticine. Water. What do we do? Cut the top off the bottle and fill it with water. Fill half of…
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The political organisation of society: the state
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1.1. The state The state is made up of institutions that organise the lives of the people who live in the same territory. The laws and powers within it are the same for everyone. The territory and the…
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Basketball referee
Tiching explorer Organización
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When a referee calls a foul in basketball he will make a hand signal to the players so that they know which offence has been committed. In this game we have to watch the videos of the referee and see if…
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Look - The effects of heat
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This experiment shows what happens to an object when we heat it. Look at the pictures. In the first illustration, the metal ball passes through the ring. In the second illustration, the ball has been…
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Final self-evaluation 05 - The Spanish economy
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Complete the following sentences with the missing words: According to the regulations included in the EU's Policy, Spain has had to make important changes to its agricultural sector, particularly…
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