Identifying unit fractions

The  exercise appears under the 3rd grade (U.S.) Math Mission. This exercise has the user identify unit fractions (as the name suggests).

Types of problems
There are three types of problems in this exercise:
 * 1) Which figure: This type of problem shows multiple figures with different parts shaded, and asks the user to find the figure with a certain fraction of its area shaded. IUF1.png
 * 2) What fraction: This type of problem shows 1 figure with a fraction of its area shaded, and asks the user to submit that fraction's value. This problem can also appear as a word problem. IUF2.png IUF2W.png
 * 3) How much: This type of problem shows a drawing of an object, like a cake, split into multiple pieces. It asks the user how much one of the pieces is, as a fraction of the entire object. IUF3.png

Strategies
Basic knowledge of fractions is required for this exercise.
 * 1) It's very easy to get both speed and accuracy badges in this exercise.

Real-life Applications

 * 1) Fractions are useful in computing taxes.