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Recursos educativos
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Nivel educativo
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Tipología
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Tipo de medio
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Tipo de actividad
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Tipo de audiencia
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EduBook Organización
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Analogue thermometers work due to the changes in volume in their column of liquid. Thermometers have a glass tube with a liquid that dilates when it heats up and contracts when it cools down. The…
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International environmental policy To deal with the problems of the environment and climate change on an international level, there are meetings and summits between the world's countries. The first…
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Our sense of balance is also located in the ear. This sense tells us about the position of the head and its movements. It consists of liquid-filled structures in the inner ear with specialist sensory…
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The surface of a leaf has many tiny holes in it, called stomata. These allow carbon dioxide and oxygen to flow in and out of the leaf so that photosynthesis and respiration can occur.
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Find out. The Iberians
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What did the Iberians use these objects for?
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Find out. Nectar
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Flowers produce nectar to attract insects. Look for information about nectar. What is its function? Why are insects attracted to it? Find out if any other animals are attracted to the nectar in flowers.
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Some forces work at a distance from an object. For example, a magnet attracts a metal key that is not touching it. However, to make deformations in a block of clay, the potter's hands need to be in…
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EduBook Organización
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Our alimentary canal is covered by a layer of muscles. When these muscles contract, they move our food forward. This is why we can swallow and digest food while we are lying down.
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Boiling and evaporation are different processes. Both change a liquid to a gas, but happen in different ways. Water boils at 100°C. During boiling, the total volume of liquid water is changing to water…
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EduBook Organización
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A mineral is a natural chemical substance with a particular shape, colour and hardness. We can identify minerals by these characteristics. 
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