QCAA General Maths EA case studies
QCAA General Maths EA · Put your knowledge to work in context.
The QCAA General Mathematics EA is the external assessment for the General Mathematics General senior syllabus in Queensland. The page identifies the current syllabus as the General Mathematics General senior syllabus 2025 (v1.3), for implementation with students who will complete their study of the course in 2026 or beyond. It is a General senior subject, so it suits students building a two-year mathematics course that leads to a Queensland Certificate of Education and can contribute to an ATAR. The published assessment structure is two papers: Paper 1, made up of a multiple choice question book and a question and response book, and Paper 2, a question and response book. The QCAA General Maths EA case studies are 5 cases and about 2,622 words.
1Ferris Wheel Height Model and Ride Timing
A Ferris wheel has a radius of 12 m and its centre is 14 m above the ground. Riders board at the lowest point, which is 2 m above the ground.
532 words, about 3 min2Comparing Investment Growth with Compound Interest and Annuities
Mia is 25 and wants to compare two savings strategies over 30 years. Strategy A: invest a lump sum of 20 000 now at 5.4% per annum compounded monthly.
383 words, about 2 min3Sampling, Bias and Inference in a School Survey
A large secondary school with 1200 students wants to estimate the proportion who regularly use the school library. The student council surveys 80 students by standing at the library entrance on a Tuesday lunchtime and asking everyone who enters.
591 words, about 3 min4Network Analysis of a Delivery Route
A courier company operates five depots A, B, C, D and E. The travel times in minutes between depots are: A–B 12, A–C 20, A–D 18, B–C 8, B–D 15, B–E 22, C–D 10, C–E 9, D–E 14.
695 words, about 3 min5Quality Control with Binomial and Normal Approximation
A factory produces circuit boards. Historically 4% are defective.
421 words, about 2 min