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
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
- 1Play 'two truths and a fib' at dinner.
- 2Invent a robot puzzle for a friend.

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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