domingo, 10 de noviembre de 2013

UNIT 3: Animal classification

Animals can be classified into three categories according to what they eat: herbivores, carnivores and omnivores. Find out more with this presentation.

miércoles, 6 de noviembre de 2013

martes, 5 de noviembre de 2013

BONES INVESTIGATION

Remember that our bones are hard because they contain calcium.
If you put a bone in vinegar, its calcium dissolves after several days and it gets bendy, not being hard anymore. Check it out with this experiment!