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Recursos educativos
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Nivel educativo
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Competencias
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Tipología
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Idioma
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Tipo de medio
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Tipo de actividad
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Destinatarios
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Tipo de audiencia
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There are other involuntary actions produced by neurons that spontaneously release nervous signals. An example of this is the nervous control of automatic breathing. We breathe because of two groups of…
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A hydra is a type of cnidarian. It is only a few millimetres long and lives in fresh water. Hydras reproduce asexually by budding. The hydra in this photo has a bud growing out of its left side. This…
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Find out. Travelling south
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Imagine that you are in the north of the Peninsula and you want to travel south. Look at the different landforms on the map. Using an atlas, answer the following questions: What types of landforms do…
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Every month, one of the ovaries releases an ovum, and the lining of the uterus thickens in order to receive the future zygote. If the released ovum is not fertilised, it dies after a few days. It leaves…
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How industrial activity evolved Craftsmanship In the Middle Ages, the master craftsman owned his workshop and tools. The production process was slow and labour intensive. These artisans belonged to a…
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We can speak to other people via the Internet. The quality of the connection is lower than with a telephone call, but it is much cheaper, especially for international calls. The best solution is to…
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Concrete is a mixture of cement, sand, gravel and water. It is used a lot in construction. To shape the concrete, the wet mixture is poured into a wooden or steel frame until it dries and becomes hard…
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Find out more... Gymnosperms
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The cypress tree is a conifer of the northern temperate region. It is evergreen with needle leaves. The yew tree can reach up to 20 m in height and can live for 1500 years. Firs are especially abundant…
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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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We obtain the vitamins and minerals we need by eating a balanced diet that includes fresh fruit and vegetables. These are the most important vitamins: