With this application I propose you not only playing with numbers but also with pieces of a whole. For example with cheese wedges.
If you buy cheese wedges in 24 pieces, you will follow the questions with the wedges to reinforce your learning. Each whole unit, circle, has got 8 wedges. You can use the plus and minus buttons to change denominator.
Of course you can also use only your phone or tablet.
You will learn to convert improper fractions to mixed numbers and, also, convert mixed numbers to improper fractions.