Recent content by davidtrinh

I try to find some national Physics Competition in English Can u give me some address ?

Thank you, thanks a lot for your replies I think I've learned a lot from them. Thanks again. However, my 2nd question seem to have not been answered.

Hi everybody, At the moment, I find it difficult to study Math. It's difficult for me to learn methods from the exercises, especially in geometry. It's the reason why I can't study well. Besides, there're a lot of exercises that we can't do (many reasons, for example: we don't have enough...