Card Calculator – El Duco

You will carry this one in your wallet or pocket…….. From a plastic case, remove a white plastic card. show the card blank on both sides. Explain that this is your new Card Calculator. Offer to demonstrate. Take a felt marker and make a lot of spots on the card. “do you know who many spots there are,” you ask. The spectator takes a guess. Let’s say 20. “ Let’s see what the calculator says. It works with static electricity, so I rub the card on the close-up pad like this. Because of the electricity, the spots will come together.” When you show the card again, all the spots have come together and formed a number! It shows 16. The spectator is wrong, but can we trust the calculator? Let the spectator examine the card and count the spots which form the number. It is 16 spots!! Correct!! Something different and new! You will love to perform the Card Calculator. It’s so easy!! No set up, always ready to go. The Card Calculator comes with everything you need!!