Jugami Math Puzzles

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Math Puzzles and Problem Solving

Classic puzzles for grades 6–8, with a plan for each one.

Hi, I'm Martin. A good puzzle looks impossible at first, then turns out to make perfect sense. This course is about that moment, and about how to reach it on purpose.

Each unit teaches a few problem-solving tools, shows them working on classic puzzles step by step, and checks every answer. Then you try a self-guided quiz on your own.

Start with Unit 1See all units
A big question mark next to two cards labeled Unit 1 and Unit 2 ? Unit 1 Unit 2

Units

Unit 1

Problem-Solving Strategies with Classic Puzzles

Five tools for when you're stuck: work backwards, try the worst case, find a pattern, make a table, and check your assumptions.

Includes worked solutions, a self-guided quiz, and Talk About It questions.

Unit 2

Logic Puzzles: Knights, Knaves and Deduction

Truth-tellers and liars, logic grids, river crossings and mislabeled boxes: reach answers that must be true.

Includes worked solutions, a self-guided quiz, and Talk About It questions.

How to use this course

  • Go in order. Unit 2 builds on the "check your answer" habit from Unit 1.
  • Try each puzzle before you open its worked solution. Being stuck for a minute is part of the fun.
  • Every answer on these pages is checked, and every quiz item has exactly one answer you can defend.