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Truth-tellers and Fibbers: Robot Island Logic Puzzles

Children reason about who tells the truth. On Robot Island, truth-bots always tell the truth and fib-bots never do. A worked example shows why no robot can say 'I am a fib-bot'. Three puzzles add a second and third robot and an 'exactly one of us' clue, and children explain their reasoning.

Part of the pack

Critical Thinking Worksheets for Ages 9-10: Mastermind Academy Logic Puzzle Pack

This is page 11 of the pack. Ages 9-10

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About this worksheet

Topic:
Truth-teller and liar logic
Pack:
Page 11 of 24 in Critical Thinking Worksheets for Ages 9-10: Mastermind Academy Logic Puzzle Pack.

How to use this worksheet

Read the rules and the worked example. For each puzzle, ask 'what if this robot is a fib-bot?' and follow the consequences. Tick truth-bot or fib-bot, then finish the 'how I know' lines.

Materials needed

  • Pencil

Extension activities

  • Play 'two truths and a fib' at dinner.
  • Invent a robot puzzle for a friend.
Hemsweta Jain (Teacher Cheena), founder of RaisoActive

Written by

Hemsweta Jain · Teacher Cheena

MBA and Early Childhood Educator, teaching since 2014 · Founder of RaisoActive, Mumbai

Every RaisoActive worksheet is designed and checked by the founder before publishing.

Published · Last reviewed

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