求翻译：进步主义教育是20世纪上半期盛行于美国的一种教育哲学思潮，对当时的美国学校教育产生相当大的影响。它起源自反对传统教育的形式主义。是什么意思？

Progressive Education is half of the 20th century, popular in the United States, an educational philosophy of ideas, the then U.S. schools have a considerable impact. It originated from the object formalism of traditional education.

Education is a progressive, for the first half of the 20th century the prevailing in the United States to a philosophy of education at that time thought that the American School of Education has had a considerable impact. It originated in the tradition of opposing formalism.

The progressive principle education is 20th century first halves of the period is in vogue in US's one kind of philosophy of education ideological trend, had the quite tremendous influence to the US school edition then.It origins examining oneself to the traditional education formalism.

Progressive education is the 20th century the first half of the prevalent in the United States of an educational philosophy that time United States school education had a considerable impact. It originated in opposing formalism of traditional education.

Progressive Education is half of the 20th century, popular in the United States, an educational philosophy of ideas, the then U.S. schools have a considerable impact. It originated from the object formalism of traditional education.