Year 9
How the model of the atom changed from Dalton to Chadwick, protons, neutrons and electrons, atomic and mass numbers, isotopes, alpha, beta and gamma decay, half-life calculations, and how Australia uses radioisotopes in medicine and dating.
Year 9
Particle and wave models of energy transfer: conduction, convection and radiation, wave features and v = fλ, sound, ultrasound and echoes, light and the electromagnetic spectrum, conservation of energy and efficiency calculations, with Australian technology stories.
Year 9
How carbon moves between Earth's four spheres: photosynthesis, respiration, combustion, decomposition, ocean exchange and rock formation, fast and slow carbon, and what Australia's Kennaook/Cape Grim records show about rising carbon dioxide. Diagram, data skills and exam practice.
Year 9
Sexual and asexual reproduction in animals and plants: gametes and fertilisation, the human reproductive system, flowers, pollination and seeds, cloning and propagation, and how each strategy helps a species survive, with Australian case studies and exam practice.
Year 9
How the nervous, endocrine and immune systems detect and respond to change: stimulus–response pathways, neurons and reflexes, hormones, negative feedback for temperature, glucose and water, and how the body defends against disease. Diagrams, checkers and exam practice.
Year 9
Start here for Year 9 Maths exams: a topic map linking every guide section, a formula sheet, a two-week plan, every key term as flashcards, and a 70-mark mock exam with full worked answers.
Year 9
Reading survey reports, sampling methods and bias, back-to-back stem-and-leaf plots, skew and outliers, choosing displays, statistical investigations, two-step chance experiments with and without replacement, 'and' and 'or' probabilities, and simulations.
Year 9
Enlargements and scale factors, similar figures, scale drawings, Pythagoras' theorem and the triangle inequality, sine, cosine and tangent, finding sides and angles, angles of elevation and depression, and geometric algorithms.
Year 9
Area, volume and capacity units, surface area of prisms and cylinders, volume of prisms and cylinders, composite objects, finding missing dimensions, and absolute, relative and percentage error with upper and lower bounds.
Year 9
Recognising quadratics, tables and parabolas, turning points and intercepts, solving graphically and numerically, the null factor law, solving monic quadratic equations, how changing parameters moves a graph, and quadratic models.
Year 9
Solving linear equations, sketching straight lines, gradient, midpoint and distance on the Cartesian plane, direct proportion, rates, simple interest and linear models. Worked examples, answer-checkers and exam-style practice.
Year 9
Index laws with variables, zero and negative indices, simplifying, the distributive law, binomial products, perfect squares, the difference of two squares and factorising monic quadratics. Worked examples, answer-checkers and exam-style practice.