Matrix rules

Strategy card

Matrices can hide two or three rules at once.

Step 1: Find the rule across rows (shape, color, count…).
Step 2: Find the rule down columns.
Step 3: Look for "each one appears once in every row" patterns.
Step 4: Build the missing picture in your head, then find it.

Tip: Each row may contain one of each shape, like Sudoku.

Worked example

Which figure completes the matrix?

A: green square
B: purple square (the answer)
C: yellow square
D: red square
E: striped green square

Why: Each column keeps its own color (green, red, purple, left to right). So the missing figure is the purple square.

Your turn

Your turn 1 of 3

Which figure completes the matrix?

Your turn 2 of 3

Which figure completes the matrix?

Your turn 3 of 3

Which figure completes the matrix?

Keep practicing

Grown-ups: Point out grid patterns on tiles, calendars and fabrics. Parent guide

Next lesson: Paper folding