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Ejection fraction refers to how much blood the heart pumps out during a contraction. An abnormal ejection fraction can be a sign of heart failure. Some people might need treatment to improve their ...

This lesson uses models to convert mixed numbers to improper fractions. This lesson uses models to convert mixed numbers to improper fractions.

Ah, math. It’s why I became an English major. But now math is spinning back around and haunting me in the form of my fifth grader. Last night, I found myself dealing with how to multiply fractions as ...