DOT’S SOME TRICK
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You show a card with one spot on one side and four on the other and three on the other side and six on the other and one one the other.
Make a card with two spots on one side and five spots on the other, as shown in the illustration.
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As you hold the card initially, one hand hides the dots on the end of the side with two spots, making it look like there is only one spot. Take the card in your other hand, by the side, hiding the middle spot on the side with five sides. Turn your hand over. It looks like there are four spots.
Take the card in your other hand, hiding the empty space above the two spots. Turn your hand over, it looks like three spots. Take the card by the side, hiding the empty space on the other side, it looks like six spots!