Cross‑walk · Math · Grade 9

Math, Grade 9 — across mapped systems.

Each cluster shows where the same content lives in other major curricula, plus open‑licensed resources curated underneath. Sources are official ministry documents — never inferred.

Subject
Math
Grade
Grade 9
Home system
Australia ACARA
≡ Equivalent≈ Overlaps→ Prereq↑ Extends
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CLUSTER 01 · 6

Number — Year 9

Index laws including negative indices; scientific notation; rational and irrational distinctions; percentage and ratio applications.

UK National Curriculum≈ OVERLAPS
Algebra (Y10) — manipulation, factoring, completing the square
AU Y9 emphasises index laws and scientific notation; UK distributes across Y9-Y11.
CLUSTER 02 · 6

Algebra — Year 9

Expand and factorise quadratics; solve linear equations and inequalities; introduce quadratic equations; sequences; linear and non-linear functions.

US Common Core≡ EQUIVALENT
Seeing Structure in Expressions (A.SSE)
Creating + Reasoning with Equations (A.CED + A.REI)
AU Y9 introduces quadratics; full quadratic-equation methods consolidated Y10.
Functions — interpret, build, compare (F.IF + F.BF)
AU Y9 introduces functions; deeper function notation in Y10/11.
Linear, Quadratic, and Exponential Models (F.LE)
UK National Curriculum≡ EQUIVALENT
Algebra (Y10) — manipulation, factoring, completing the square
CLUSTER 03 · 6

Measurement — Year 9

Trigonometric ratios in right-angled triangles; Pythagoras applied; surface area and volume of cylinders, cones, spheres.

UK National Curriculum≡ EQUIVALENT
Geometry and measures (Y10)
Both cover right-angled trigonometry. US students typically meet trig in Geometry (Grade 10) rather than Algebra I.
CLUSTER 04 · 6

Space — Year 9

Similarity and congruence; geometric reasoning; coordinate geometry of straight lines; midpoint, distance, gradient.

No cross‑walks recorded for this cluster yet.
CLUSTER 05 · 6

Statistics — Year 9

Construct back-to-back stem-and-leaf plots and histograms; compare distributions; bivariate data and lines of best fit informally.

US Common Core≡ EQUIVALENT
Statistics — Interpreting Categorical and Quantitative Data (S.ID)
UK National Curriculum≡ EQUIVALENT
Statistics (Y10)
CLUSTER 06 · 6

Probability — Year 9

Two-step chance experiments with and without replacement; complementary events; relative frequency.

No cross‑walks recorded for this cluster yet.
Same subject — other systems
Evidence trail
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