Each card has a photo of the President, along with the name, years served, and the corresponding Vice President.
Move each card to it's corresponding slot so that they are in order. A timer counts up, so that you can beat your prior score. If you get stuck, click the solve button to move each card to it's appropriate slot.
This is a great fun way to learn the order of the Presidents. You can't help but learn, and will probably be amazed as you gain perspective by the ordering.
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