October 10, 2026 · Featured
iHOSA Chemistry Explanations: Connecting Particle Models to Observable Properties
A focused guide for iHOSA chemistry students on linking microscopic particle models to macroscopic observations, featuring worked examples and diagnostic tools.
Read article →Oct 8, 2026
iHOSA BCE Project Evaluation: Measuring a Change Beyond Attendance Numbers
Learn how to evaluate iHOSA BCE projects with metrics that capture genuine behavior change, not just surface-level participation. Two worked examples and a diagnostic…
Oct 6, 2026
iHOSA Biology Data: Separating a Control Result From an Experimental Effect
A focused guide for iHOSA students on distinguishing baseline control data from experimental effects, using teaching illustrations to prevent common reasoning errors in biology…
Jul 20, 2026
Biology, Chemistry or Psychology? Choosing and Preparing Your iHOSA 2027 ATC Subject by Your AP, IB or A-Level Course
How to choose your iHOSA 2027 ATC subject — biology, chemistry or psychology — by how much it overlaps your AP, IB or A-Level…