QCAA Agricultural Science EA study guide
QCAA Agricultural Science EA · Work through your exam, one topic at a time.
The QCAA Agricultural Science General senior syllabus is a Queensland senior science course. The current syllabus document is the Agricultural Science General senior syllabus 2025 (v1.3), described by the QCAA as being "For implementation with students who will complete their study of the course in 2026 or beyond." External assessment for the subject is delivered across a Paper 1 and a Paper 2, each with its own question and response book, plus a separate multiple choice question book for Paper 1; the QCAA publishes a marking guide alongside each year's papers. Published past papers and marking guides on the QCAA page span 2020 to 2025, and a 2020 Paper 2 stimulus book is also listed. Within the course, the QCAA publishes sample assessment instruments for Unit 3 IA1 (a data test, 10%), Unit 3 IA2 (a student experiment, 20%) and Unit 4 IA3 (a research investigation), so a substantial share of the course is assessed internally through school-based tasks before the external papers. The QCAA Agricultural Science EA study guide has 2 sections and about 1,129 words.
01Unit 3 IA1: Data Test - Reading Agricultural Data Critically
The IA1 data test supplies unseen tables, graphs and short scenarios. You are assessed on interpreting evidence, not recalling content.
370 words, about 2 min02Unit 3 IA2: Student Experiment - Design, Analysis and Evaluation
The IA2 is your own investigation: a research question, a modified or extended experiment, raw data, processing, analysis, evaluation and a suggested improvement. Concepts you must control: formulating a testable hypothesis with a predicted direction; identifying variables and operationalising them (how exactly will you measure leaf area or soil moisture?); replication and randomisation to reduce bias; calibration and consistent technique; appropriate processing (means, standard deviation, percentage change, graphing with uncertainty); and a reasoned evaluation of reliability and validity.
759 words, about 4 min