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Guesswork


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    NRICH

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Guesswork

In this number puzzle/trick, learner #1 thinks of a number between 1 and 63. Learner #2 shows learner #1 six cards and asks them whether the cards contain their number. Learner #2 uses this information and the cards to determine the number in learner #1's head. This guide also contains an animation in which the computer attempts to guess your number. Use this activity to explain binary arithmetic.

Quick Guide


Preparation Time:
Under 5 minutes

Learning Time:
5 to 10 minutes

Estimated Materials Cost:
1 cent - $1 per group of students

Age Range:
Ages 14 - 18

Resource Types:
Activity, Game

Language:
English

Materials List (per group of students)


Subjects


  • Mathematics
    • Number and Operations
      • Number Systems
    • Problem Solving
    • Reasoning and Proof

Informal Categories


  • Games

Audience


To use this activity, learners need to:

  • see
  • read
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


Components that are part of this resource:

Access Rights:

  • Free access

By:

Rights:

  • All Rights Reserved, University of Cambridge, ©2007

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