El propósito de este blog es proporcionar a las familias de los alumnos de tercero de Educación Primaria recursos educativos digitales en lengua inglesa para compartir el área de Conocimiento del Medio con sus hijos. The main purspose of this blog is to offer a sensible way to my students' parents of sharing the subject Science and Environment with their children.
Monday 17 December 2012
Sunday 16 December 2012
Forces
Forces give an object the energy to move, stop or change its direction.
Types of forces:
- Contact forces: There's a contact between two objects, two people or a person and an object.
- To push: to move an object forwards.
- To pull: to move an object backwards.
2. Non-contact force: no contact takes place.
- Magnetism: It is the force the magnets produce.
Thursday 13 December 2012
Tuesday 11 December 2012
Complex Machines.
Complex machines are two or more simple machines working together.
e.g. A car is a complex machine; there are many simple and complex machines working together and at the same time.
Simple Machines
Simple Machines
A simple machine is a device for altering a force.
Simple Machines: lever, bar, pulley,
inclined plane, screw, wheel, axle and wedge.
1. Lever:: A lever moves on a
fulcrum
2. Wheel:
A wheel spins around an axle.
3. Pulley: A pulley is a wheel with
a rope.
4. Inclined plane:
5. Wedge
6. Screw
7. Axle
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