(no subject)

[alewig.livejournal.com]

Do any of you know what those cards are called that come in almost everything like in Cracker Jacks and some sports cards packs that change pictures as you twist the card from one side to the other... still on the front just from left to right and vice versa... does this make any sense? I'm wanting to make my own (on a much larger scale) for an art project but I can't even figure out what it's called, let alone how to make it.

Any help is much appreciated!!