Les machines

Les machines
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Instrucciones del autor

Les machines simples et complexes

Explora las hojas de trabajo

Los estados de la materia

Physical Science - Science

Los estados de la materia y sus características

L'énergie

Physical Science - Science

L'énergie, types et sources

Energy

Physical Science - Science

forms of energy

Renewable and non-renewable sources of energy

Physical Science - Science

Characteristics and examples of non-renewable and renewable energies.