When
we showed this card trick to a group of middle schoolers, they gasped
in amazement—and all wanted to learn how to do it.
Using
Mind Reader
With A group
These
instructions will help you lead your group through learning the
Mind Reader card trick. Don't worry if you are a klutz with cards.
This trick requires no manual dexterity (though having a little
mental dexterity helps).
Demonstrating the Trick
Read over the Mind Reader
instructions and try the trick a few times. Once you are confident
that you can do the trick, demonstrate it to your group.
First, ask everyone
to get out a pencil and paper so that they can write down the answers
to the mathematical questions you’ll be asking. Turn your back
while the group selects a card and lays it on a table or desk. Then
chose a card yourself, memorize it, and put it down just to the
right of the card the group has chosen.
Then follow
the steps on Mind Reader instructions.
Have the group follow your directions. When they have reached the
end of the calculations, turn over the cards and reveal the number
that they have calculated.
Your group
will be amazed at your magical abilities.
Give Everyone a Chance to Try
It
Have the group divide into pairs and hand out decks of
cards and copies of Mindreader
instructions. Have each pair do the trick.
You may need
to point out to people that the magician doesn’t actually know
the number that’s in the other person’s head until the
cards are turned over. The magician only knows the card he or she
chose. Turning over the cards reveals the number that is the inevitable
result of the person’s mathematical calculations. If the person
came up with a different number, then the magician and the person
should check the math together. If the math is done correctly, the
number will match the cards.
Figuring Out How the Trick Works
Every twodigit
number has two places: the 10’s place and the 1’s place.
In the number 25, for example, there’s a 2 in the 10’s
place, which means there are two 10’s, and there’s a 5
in the 1’s place, which means there are five 1’s.
In this trick,
the magician gets the person being tricked to do a series of mathematical
operations that move the number of the person’s card from the
1’s place to the 10’s place—and puts the number of
the magician’s card in the 1’s place.
Analysing
Mind Reader explains exactly how this happens. Younger middle
schoolers may not be able to follow the entire explanation, but
they may be able to see that the card the victim chooses always
moves over to the 10’s place. Even if they don’t understand
the complete explanation, middle schoolers of all ages enjoy doing
this trick.
