Algebra is the language of mathematics — using symbols to express and generalise patterns. In MYP Mathematics, students develop algebraic thinking through investigations and real-world modelling, assessed across four MYP criteria.
An algebraic expression uses variables and constants (e.g. 3x + 5). An equation states two expressions are equal (e.g. 3x + 5 = 20). Solving equations: use inverse operations to isolate the variable. Students learn to expand brackets, collect like terms, and solve multi-step equations.
A function maps each input to exactly one output. Linear functions: y = mx + c where m is the gradient and c the y-intercept. Students investigate: how changing m and c affects the graph, find equations from two points, and interpret gradient as rate of change in context (speed, cost per unit).
Two equations with two unknowns. Graphical method: the intersection point of two lines. Algebraic methods: substitution and elimination. Real-world context: "Two cinema tickets and one popcorn cost $25; one ticket and one popcorn cost $15. Find each price."
MYP Mathematics is assessed against four criteria: A (Knowing and understanding), B (Investigating patterns), C (Communicating), and D (Applying mathematics in real-life contexts). Each criterion is scored 0–8. There is no single exam — assessment is ongoing through investigations, tests, and projects.
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