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Mathematics
Sciences
Testing how insecticides affect waterweed and photosynthesis
A controlled experiment compares plant appearance, chlorophyll content and photosynthetic electron transport across three horticultural insecticides.
Read the breakdown ↗Chemistry · Extended EssayInvestigating UV exposure, stabilizer and chlorine decay
A two-factor experiment examines how ultraviolet light and cyanuric-acid stabilizer change hypochlorite decay in pool water.
Read the breakdown ↗Physics · Extended EssayEstimating cosmic expansion from galaxy data
Galaxy images and spectra are used to estimate the Hubble parameter and cosmic age, followed by a discussion of model assumptions and uncertainty.
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Evaluating policy responses to excessive spirits consumption
The paper considers how effectively public information, taxation and regulation reduced overconsumption of spirits in Singapore.
Read the breakdown ↗Business management · Extended EssayAssessing an international expansion decision
A focused decision question asks whether an agricultural organization should enter a new overseas market.
Read the breakdown ↗History · Extended EssayComparing causes of the Battle of Britain outcome
The investigation weighs British strengths against German mistakes to explain the battle’s outcome without turning into a narrative chronology.
Read the breakdown ↗Psychology · Extended EssayUsing psychological research to examine bilingual education
The essay compares programme design, community support, socioeconomic context and funding in Indigenous Australian and international education settings.
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