lunes, 27 de junio de 2011

Actividades para el verano



Ahora vamos a pasar unas largas y merecidas vacaciones, pero, seguro que sacamos tiempo para repasar un poco.

domingo, 12 de junio de 2011

Tetris de Europa

Juego del tetris de los países europeos en tres niveles de dificultad.
Está en inglés y tiene anuncios mientras se carga el juego.

jueves, 14 de abril de 2011

Rocks inside the Earth

Rocks

The heat inside the Earth melts rocks. These melted rocks can form volcanoes and cause earthquakes. Earthquakes are tremors on the

Earth's surface caused by the heat energy inside the Earth.
Volcanoes and earthquakes can change landscapes quickly and violently.

lunes, 11 de abril de 2011

domingo, 6 de febrero de 2011

Our reproductive system









HOW WE REPRODUCE
In human reproduction there are three processes:
fertilization, pregnancy and childbirth.
Fertilization is the union of a sperm and a matura ovule, which produces a zygote.
Pregnancy is the period when the zygote becomes the embryo, and the embryo
develops inside the mother's uterus.
Chilbirth is when the baby leaves the mother's body.



miércoles, 26 de enero de 2011

Sexual reproduction in animals

Animals perform sexual reproduction using reproductive organs.
Sexual reproduction in animals has three phases: the production of gametes, fertilization and the development of the embryo.