Maiman and Lai. Experimental education is a theory that used natural science experimental methods to study children's development and its relationship with education, which rose in some European and American countries at the end of 19 and the beginning of the 20th century. Its representative figures are German educationists Mayman and Rai, and their representative works include Mayman's Outline of Experimental Pedagogy and Rai's Experimental Pedagogy.