the only real motion that's going to workthe shins is that tibiual whatever which moves your toes up and down.
One i've found is when sitting in class or something, curl your toes back and raise them up and back down really fast for a long time.
The other is the same motion, but worked differently. Get on the edge of something with the back of your heels, then you keep your toes curled up still and instead of going up, since you're on the edge, go downward and then back up. This is a great workout and great when supplemented into a calve workout, and especially so for when one has shin splints (along with icing and stretching!).
Oh and i've found kicking hard objects until your bone and muscles become rock hard over the top seems to stregthen the shins too ................. what?! hehehe it works!
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Shin Exercises? 
Linear Mode
