Assertion: homework's time | /r/HasProperty | spent on achievement
Facets:
Source sentences:
text: For students in primary grades, the correlation between time spent on homework and achievement is near zero.
text: Previous research, including a 2006 analysis of homework studies, found a link between time spent on homework and achievement but also found it was much stronger in secondary school versus elementary school.
text: When Cooper and his colleagues reviewed a new batch of studies in 2006, they once again found that “the mean correlation between time spent on homework and achievement was not significantly different from zero for elementary school students
text: A review of research by Duke University Professor Harris Cooper found that for elementary school students, "the average correlation between time spent on homework and achievement … hovered around zero.