Grade 4 students need to be able to convert halves and fifths to decimal equivalents. This is done using materials as well as abstractly.

A good investigation is to give groups of students one of these fractions:

They shade that fraction of a tenths grid in, and use this representation to convert fraction to tenths, then a decimal. For example, two fifths is shaded in:

and the visual used to convert the lowest term fraction to 4 tenths.

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