Ali folded a paper into 6 equal parts. Which unit fraction names one part of the folded paper?
A number line is shown.

What fraction is represented by the shaded part?
Which square shows 4 equal parts?
Marcus cut a pizza into 6 equal-sized slices and then ate 1 slice. What fraction of the pizza did Marcus eat?
Image of a pizza
Plot a point on the number line to show the fraction
Match each model on the left to the fraction it represents on the right. Draw a line to make a match.
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James, Ginger, and Fred made sandwiches. They each ate part of a sandwich. The models are shaded to show how much of a sandwich each person ate.

Determine which person ate a part of a sandwich that represents a unit fraction. Show or explain your reasoning. Be sure to include why the other models do not represent a unit fraction.