A teacher has 21 red pens. If the ratio of red pens to blue pens she owned was 3:1, how many pens did she have total? It’s one of the word problems sixth-graders at Vera C. O’Leary Middle School were ...
Education in America is an evolving thing: After 14 years of No Child Left Behind, President Obama replaced the much-loathed, standardized, test-heavy law with one that allows states to set their own ...
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