domingo, 15 de marzo de 2015

Reflection of Light


6 comentarios:

  1. it´s very good for studying

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  2. I am Pedro 5a.
    I cannot understand very well what is saying the person that speaks.

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  3. it´ s good for studying.I am Inés

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  4. it is very interesting !!!!!!!!!

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  5. It was very short and easy to understand! I found it very useful because it explains two pages of my Science book in 49 seconds! Thanks Ana!

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  6. I agree with Noel. This video is short and helpful!

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