YOu will need 4 sheets of paper
a pencil
and a volunteer
Preparation:
To do the magic number trick get 4 pieces of paper. On one sheet write all the odd numbers between 1 and 16 (1,3,5,7,9,11,13,15) mark a triangle on it On the next sheet write 2,3,6,7,10,11,14,15, mark a square on it On the next sheet write 4,5,6,7,12,13,14,15 write a star or pentagon it on the last sheet write 8,9,10,11,12,13,14,15 mark a hexagon on this sheet
Show:
At the show ask for a volunteer. Give the four sheets of paper to him/her. Then ask him/her to pick a number on any card. Then ask them which cards it is on so 14 is on square star and hexagon. Meaning that if they picked 14 they should say square, star, and hexagon.
Think of triangle as 1 square 2 star 4 and hexagon 8. If they said square and star add the numbers of squar and star ; 2+4=6 so their number is six.
Secret:
The reason why it works is the same concept as binary numbers. To do this say that all the numbers on triangle need to use a one in the equation since 1=1 3=11 5=101 all that really means is if you turned the number into a binary number it would have a one in the ones place whatever the rest of the numbers are. 2 is just that it would have a one in the two's place if you turned it into a binary number. You just need to come up with symbols.
a pencil
and a volunteer
Preparation:
To do the magic number trick get 4 pieces of paper. On one sheet write all the odd numbers between 1 and 16 (1,3,5,7,9,11,13,15) mark a triangle on it On the next sheet write 2,3,6,7,10,11,14,15, mark a square on it On the next sheet write 4,5,6,7,12,13,14,15 write a star or pentagon it on the last sheet write 8,9,10,11,12,13,14,15 mark a hexagon on this sheet
Show:
At the show ask for a volunteer. Give the four sheets of paper to him/her. Then ask him/her to pick a number on any card. Then ask them which cards it is on so 14 is on square star and hexagon. Meaning that if they picked 14 they should say square, star, and hexagon.
Think of triangle as 1 square 2 star 4 and hexagon 8. If they said square and star add the numbers of squar and star ; 2+4=6 so their number is six.
Secret:
The reason why it works is the same concept as binary numbers. To do this say that all the numbers on triangle need to use a one in the equation since 1=1 3=11 5=101 all that really means is if you turned the number into a binary number it would have a one in the ones place whatever the rest of the numbers are. 2 is just that it would have a one in the two's place if you turned it into a binary number. You just need to come up with symbols.
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