回复：问一下，谁有教过孩子百分比的经验？分数，小数，百分数到底先教那个？

1. Be patient! very important to be patient!

2. Parents are the best persons to watch and help development of kids' intelligence.

3. Parents' task is not to "teach", but to "direct". If you try to force your knowledge into your son's head, that never works. Watch, learn and think based on some common sense, you will know how to "direct" him. Every kid is different.

4. Check this very useful link: http://www.coolmath.com/prealgebra/01-p2-fractions/index.html