Matrix rules

Strategy card

Matrix reasoning is systematic rule induction across two dimensions.

Step 1: Decompose each cell into features.
Step 2: Test rule types for each: constant, progression, distribution of three, combination.
Step 3: Derive the missing cell feature by feature.
Step 4: Eliminate options systematically; confirm the survivor against every rule.

Tip: Write a mini-table of features if you get stuck; it makes hidden rules visible.

Worked example

Which figure completes the matrix?

A: big striped red diamond
B: big outlined red triangle
C: striped red triangle
D: big striped red triangle (the answer)
E: big striped red heart

Why: Each column keeps its own size (small, medium, big, left to right). Each row keeps its own shape (heart, diamond, triangle, top to bottom). Each column keeps its own fill (solid, outlined, striped, left to right). So the missing figure is the big striped red triangle.

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: Discuss how scientists look for patterns in data tables. Parent guide

Next lesson: Paper folding