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Help a boy to hit a bullseye with his paper plane. Build two fractions that add up to a target number up to two. Complete the numerators of both fractions (one may have a fixed denominator). For example, work out how many thirds and how many sixths can be added together to total 4/3. Look at fraction bars and a number line to compare the two fractions and their total. This learning object is one in a series of seven objects.