Parent guide · Australian curriculum

Year 8 Maths: topics and how to support your child

Year 8 is where algebra gets serious — linear equations, index laws and Pythagoras all arrive. Gaps from earlier years start to bite here. Here’s exactly what your child covers, the topics most kids struggle with, and how to help.

The short version

Year 8 maths deepens algebra and introduces linear equations, index laws, Pythagoras and proportional reasoning. This is the year earlier gaps (fractions, integers) become visible — because everything new now depends on them.

What Year 8 maths covers

Number & Algebra 14

The dominant strand — this is a heavily algebraic year, and the foundation for everything in Years 9–10.

  • Integers & rational numbers
  • Order of operations
  • Fraction & decimal operations
  • Percentages & percentage change
  • Ratios, rates & proportion
  • Index laws & notation
  • Scientific notation
  • Algebraic expressions
  • Expanding & factorising
  • Simplifying expressions & substitution
  • Linear equations
  • Linear graphs, gradient & intercepts
  • Inequalities
  • Sequences

Measurement & Geometry 10

Geometry steps up with Pythagoras, congruence and the start of similarity.

  • Angles & parallel-line angles
  • Triangles & quadrilaterals
  • Congruence
  • Similarity (intro)
  • Pythagoras' theorem
  • Area, perimeter & surface area
  • Volume
  • Transformations & tessellations
  • Unit conversion
  • Cartesian plane

Statistics & Probability 6

Data analysis and probability become more formal, including two-step events.

  • Data collection
  • Mean, median, mode & range
  • Scatter plots & bivariate data (intro)
  • Probability & sample space
  • Probability experiments
  • Compound events (intro)

Financial & real-world maths 4

  • Best buys & discounts
  • Profit & loss
  • GST
  • Budgets & modelling

The topics most Year 8 kids struggle with

If your child is finding maths hard this year, it’s very often one of these — and they’re all fixable with targeted practice:

How to tell if your child has gaps

Report cards and “they seem fine” aren’t always reliable — kids can keep up in class while quietly missing foundations. Warning signs:

The fastest way to know for sure is a short placement check that tests across all the Year 8 topics and shows you exactly where the gaps are — strand by strand.

A free 10-minute check across the Year 8 topics. You get a clear gap report: what’s strong, what to focus on. No credit card. Start the free check →

How to help at home

This is exactly how Summit Learn works: we place your child precisely, then build a daily plan around their gaps — at the right level, with worked solutions on every question, and progress you can see.

Every Year 8 maths topic, step by step

Free step-by-step guides — the method, a worked example and practice for each topic. No sign-up needed.

Find and fix your child’s Year 8 gaps

Free placement check first — then a personalised weekly plan. Both subjects, all of Years 4–10. From $24/mo, cancel anytime.

See where my child is — free →

This guide is a general overview for parents and reflects the broad scope of Year 8 maths in the Australian curriculum. Exact content can vary by state and school.