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.

Key learning objectives

•Students explore the effect of changing the numerator and denominator on the type and size of a fraction.
•Students identify pairs of fractions that add up to a target number.
•Students find equivalent fractions.
Educational value
•Helps students to relate numerators and denominators to the type and size of a fraction.
•Provides a framework for students to make and test predictions.
•Features a tool that dynamically generates the position of fractions and totals on a number line.
•Prompts students to find and identify equivalent fractions.
•Includes an onscreen notebook that provides a record of the student's work.
•Provides an option to print each set of equations in the student's onscreen notebook.

Year level
5