Why we should donate to Japan?

Question:

I have this Japanese assignment and the task description is-
Japan has just suffered a terrible earthquake and tsunami in Sendai and neighbouring areas. So many people are suffering and homeless now. Your japanese class have decided to raise funds to ease the plight of those people. You will be given the opportunity to speak on assembly to persuade both teachers and students at your school to donate money to support Japan in its hour of need. (3 minute speech)
And im not being completely slack and just putting up this question for others to do, i just need ideas and i've already spent hours searching on google for like reasons why we should donate and that, but the results are like "Oh, dont donate to japan!" and "why donate to japan when its such a wealthy country, it doesnt need the money cuz they can just pay for their own damage" and that... i cant really find a decent website.
Also im really bad at speeches, so i dont know how to start my speech... like a beginning sentence to engage the audience in the first place...
But the main point! i cant find reasons why we should donate. I know like that japan helped other countries when they were in need like the US when katrina struck, and we should help them because japan would do the same for us, and countries should just help each other in desperate times.
But i cant just say that.. Like i need it to be more persuasive and sophisticated, because i need to speak in front of my school (hopefully people will be persuaded haha) and also i dont have that much information for 3 minutes..

Answer:

In order to explain why "Don't donate to Japan because they have a lot of money!" is retarded, I'm going to start out by asking WHY Japan is such a wealthy country? The country is not gifted in natural resources, it is the Japanese people that have built up Japan through effort and brains. We should donate to Japan because donating to Japan is not dumping money into a black hole like donating to poorer countries. Japan will actually make something of the donations. We keep dumping more and more humanitarian aid into poor countries that are not getting richer because the people themselves are of poor quality.

Sure, Japan will recover without our aid, but why is that a good reason not to help them out? When are we going to start helping people who help themselves? Japan deserves our help because they have earned it by working hard.