Friction is difficult (for me) but when you understand it is very interesting. Irene Regueira.
HiI like the drawings there really nice.Melanie
I think friction is very interesting!!!!!!!!!!!
I liked all videos-Saul.
Friction is difficult (for me) but when you understand it is very interesting.
ReplyDeleteIrene Regueira.
Hi
ReplyDeleteI like the drawings there really nice.
Melanie
I think friction is very interesting!!!!!!!!!!!
ReplyDeleteI liked all videos
ReplyDelete-Saul.