美国教师联合会 meaning in Chinese

american federation of teachers

The slogan problem solving was put forward by the american teachers union in the fourth international mathematics education conference , it caused intense influnence all over the world since it arose . since then , educational researchers at home and abroad have been exploring and researching constantly in this field
“问题解决”是美国教师联合会在第四届国际数学教育大会上提出的口号，口号一经提出，即在国际上产生了强烈的影响。从此，国内外教育研究工作者在这一领域不断地进行着探讨和研究并取得了大量有价值的成果。