KINETIC AND POTENTIAL ENERGY

3 comentarios

[Estibaliz - 03 de junio de 2012 - 22:01]

I love this education series!! I'm glad you also like them, Irene.

[Irene Znidar 5ºA - 31 de mayo de 2012 - 20:47]

It's a very funny and interesting video. Thanks for putting this things.

[Irene Znidar 5ºA - 31 de mayo de 2012 - 20:45]

It's a very funny and interesting video. Thanks for this things.