Research would be of good if it benefits us or gives a knowledge for a certain interest for the people. But since Research means that we are finding a certain knowledge for a certain topic that have interest of. Then I could conclude that a research would be good if it has a significance and its objective is for the social and personal knowledge. There are many kinds of criteria in evaluating a certain research. Just like the National Council of Teachers of Mathematics, their criteria are worthwhileness, competence, openness, coherence, credibility and also its ethical factors. If it fits with these criteria then they evaluate it as a good research.