- Card Tricks
- Number Tricks
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Addition Done Right
Grade level: 6-12
Difficulty level: Medium
- Volunteers from the audience write two numbers on a board.
- Beginning with these two numbers they construct a Fibonacci-like sequence, where each term starting with the third one is the sum of the
previous two terms.
- The volunteers are asked to write out the first ten terms and add them up.
- Before all the ten terms are written out, the magician starts working on the same task in his/her head, and has the answer faster than
the volunteers.
Detailed description
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