Matrix (Logic Grid) Puzzles

• To solve logic grids matching two or three categories (person–colour–pet) using elimination.
• One-to-one rule: each item matches exactly one in each column unless stated otherwise.
• To mark ✓ and ✗ on a table — systematic, not guess-and-check randomly.
• Foundation for Class 5 reasoning and later competitive exam grid puzzles.

Level 1 — Grid setup

Verbal: Rows = one category (names); columns = another (favourite fruit); cells = match yes/no.

Symbolic: If Ali → mango, then Ali ≠ apple and no one else → mango (one-to-one).

Method: 1) Draw empty grid. 2) Fill definite ✓. 3) Cross ✗ in same row/column. 4) Repeat.

Level 2 — Elimination chains

Verbal: When a row has only one blank left, that must be the match — forced move.

Real-life: Sudoku-like thinking without numbers — attribute matching.

3 children: Ana, Ben, Cy. Pets: dog, fish, parrot. Clues: Ana has dog. Ben does not have parrot. Who has fish?

Step 1 — Grid 3×3 pets.
Step 2 — Ana–dog ✓ → Ben,Cy not dog; Ana not fish/parrot.
Step 3 — Ben not parrot → Ben fish or dog; dog taken → Ben fish ✓
Step 4 — Cy parrot ✓
Answer: Ben has fish.

Colours: Red, Blue. Owners: P, Q. P not Red. Who has Blue?

Step 1 — P not Red → P Blue ✓, Q Red ✓
Answer: P has Blue.

• What does one-to-one mean in a grid?
• Ana–dog ✓ — what crosses follow in Ana's row?
• Two people, two cities: clue "X not Delhi" — what follows?
• Stretch: 3×3 grid — after two ✓ marks, how many cells resolved by elimination?

Revision tip: Print a blank 4×4 grid — practise with names and sports until ✓/✗ feels automatic.

Open the Practice tab for graded questions on Matrix Puzzles.

• Use the platform-native live simulation or PhET-style tool for this topic (number line, Venn, physics playground, molecule builder, sensor dashboard, etc.).
• Mirror / body / home activity: physically do the concept (count objects, measure, role-play) and photograph or describe for portfolio.
• Voice or text reflection with AI Mentor: explain the concept to a younger student or family member.

• "Explain this concept to a Class 6 student using one real example from an Indian home, school, market, or festival."
• "What is one common mistake students make here, and how would you catch yourself making it?"
• Stretch: "How does this connect to coding, robotics, money, health, environment, or a future career?"

• Complete the core practice + one extension activity (photo, table, short reflection, or mini-project) for base XP + topic badge.
• 5-7 day streak or family discussion note = multiplier + visible artifact in parent/principal dashboard.
• Best real-world application stories (anonymised) featured on class or national leaderboard.

• One hands-on project or measurement using the Drishti kit or household items that makes the concept physical.
• Direct link to at least one Future Skill track (Money Management, Green Tech, Cyber Defenders, Micro-Entrepreneurship, AI Mastery, Sustainable Living, Personality Development).
• Coding extension where relevant (simple script, simulation, or data logging).

This material emphasises experiential "learning by doing", competency (apply/create/analyse), vocational exposure, critical thinking, and multidisciplinary connections. Designed to feed live worlds, AI Mentor (with memory), gamification, robotics, parent analytics, and future skills — not just exam prep.

Portfolio Evidence Idea: Your photo/table/reflection/project + one sentence on "How this helps me in real life or a possible future path."

Open the Practice tab for aligned questions (easy/medium/hard + case-based) with full AI scaffolding.

See curriculum for cross-links and the full future-skills/robotics chapters.