Natural Science: How paper is made Food chain Digestive System Circulatory System Solid or liquid? Non-newtonian fluids Archimedes' principle Upthrust: easy experiment. Why do some things float and other ones sink? Bouyancy (upthrust force), to figure out the mass of an object. Simple machines Levers Pulleys Inclined planes Pollination process Here you have some people who changed human history through their discoveries and inventions. Click on each name to watch the video about their lifes and works. Marie Curie Alexander Fleming Edward Jenner Social Science: The Earth movements Sun's positions Longitude and latitude Weather and Climate Lighting Water Types of rocks Something about minerals What do those letters stand for? Understanding the abbrevations AD and BC How to work out the century PREHISTORY Paleolithic period Neolithic period Bronze and Iron Ages Human evolution ANCIENT HISTORY The Iberia...
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