America Needs To Study Fractions
America Needs To Study Fractions Recent research finds that a solid grade-school knowledge of fractions and long-form division accurately predicts later success in high school math. Christie Nicholson reports //news.yahoo.com/america-needs-study-fractions-040008913.html
Create Date : 21 มิถุนายน 2555 |
Last Update : 21 มิถุนายน 2555 1:16:34 น. |
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