How paper is made? (¿Cómo se hace el papel?)

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Posted in: Natural Science 4º,Vídeos

How glass is made? (¿Cómo se hace el cristal?)

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Posted in: Natural Science 4º

SIMPLE MACHINES for primary.

Simple machines have few or no moving parts. We can put simple machines together and make complex machines.  There are six types of simple machines: wedge, inclined plane, screw, pulley, wheel and axle and lever. There are 3 types of levers too: class one, class two and class three. For more information, click on the word.       WEDGE (cuña)                      INCLINED PLANE (plano inclinado) SCREW  (tornillo)        PULLEY (polea)   VIDEO WHEEL AND AXLE (rueda y eje) LEVERS  (palanca)  VIDEO                CLASS 1 ...

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Posted in: Natural Science 3º,Natural Science 4º