Out of all the subjects, P.E. could be the last you would think of as a great match for an iPad/iPhone app. But the PowerChalk - 10 Second Telestrator app is a perfect match for coaches and teachers looking to break down the technique of students. The app allows you to record 10 seconds of action, then record over that video, "John Madden-style", while drawing, measuring angles and speaking over the video. Controls allow you to quickly scrub through the video to find the exact moment you need. Baseball pitching, golf swings, batting, basketball freethrows and other technique dependent actions are all perfect for this app.
After you've recorded the telestration, a quick upload and share to the PowerChalk site allows you to get the video to your students, other coaches or parents quickly. The PowerChalk website is full of other features, including side-by-side comparisons so you can show students how they compare to past videos of themselves or even the pros. Some features might require a monthly subscription, but all are worth the cost.
The app could use a little help in the design department, but it's amazingly functional and a powerful tool that wouldn't be imaginable without the amazing flexibility of the iPad/iPhone. Haven't you always wanted to channel your inner sportscaster?