Here are some resources for learning/practicing how to tell time in Japanese:
1. Printable worksheets from kotoba.littlestar.jp. There’s also a printable clock you can cut out and put together.
2. “What time is it?” PDF download from KF Studio will let you make up your own quiz.
3. Telling Time in Japanese lesson from About.com.
4. 時計の読み方 App for practicing telling time, $2.99. The game is at a second-grade level.
6. (not Japanese but) a cute game called What Time is it? by eeBoo. We have this and it’s very well made!
7. Make sure you check out my post about counting.