mobile - Selecting age between 6 and 18

I've got a reasonably simple requirement but can't come up with any appealing ways of presenting it to the user.

To meet the requirement, the user has to be able to choose 1 or more age groups, ranging from 6 to 18. In its most simplest form, it would be a row or grid of 13 checkboxes with the values 6 to 18.

The selection can be completely random, i.e. 7, 10, and 18 so any kind of slider or other selector that would work with a maximum value won't work.

I'd love to hear some ideas on how to make this more appealing to the user.

Answer

Maybe something like this could work:

Since you have such a small number of options just make them large, press-able buttons which display a checkmark once you tap them.

This list obviously scrolls off the screen but I think you get the idea.

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