Journal

Why Vertex Form Matters for Real-World Problems
Quadratic equations appear whenever a situation rises and falls, grows and shrinks, or reaches a clear best or worst value. A ball follows a curved path, the…
Reading Quadratics in Two Useful Forms
A quadratic equation can look quite different while describing exactly the same parabola. The two formats students meet most often are standard form and vertex…
Graphing Parabolas: Finding the Vertex and Axis of Symmetry
A parabola is one of the most recognisable shapes in mathematics, appearing whenever a quantity is squared and then adjusted. From the gentle arc of a kicked…
Understanding the quadratic formula and when to use it
Quadratic equations appear whenever an unknown is squared. They describe curved graphs, changing areas, projectile paths and many optimisation problems. A…
Completing the square step by step for Australian students
Working through quadratic equations is a routine part of senior secondary mathematics across Australia, whether a student is preparing for the HSC in Sydney,…