Task reminder: After the recording, you have 40 seconds to re-tell the lecture in your own words. Mention the topic, key points, and any examples. Speak continuously — pausing loses marks.

1. Re-tell Lecture: Sample 1 — How Vaccines Work

A lecture explaining the mechanisms by which vaccines train the immune system to recognise pathogens. The speaker covers different vaccine types — attenuated live, inactivated, subunit, and mRNA — their relative advantages and limitations, and how herd immunity is achieved through widespread vaccination.

Sample Notes

2. Re-tell Lecture: Sample 2 — The Philosophy of Time

An introduction to philosophical questions about the nature of time: whether time is real or merely a perception; whether the past and future exist; and whether time travel is logically possible. The lecture draws on both analytic philosophy and recent physics to illustrate how counterintuitive time's fundamental nature is.

Sample Notes

3. Re-tell Lecture: Sample 3 — Urban Inequality and Housing

A lecture analysing the causes and consequences of housing affordability crises in major cities worldwide. The speaker covers the roles of land supply constraints, zoning regulation, speculative investment, and inadequate social housing provision, and evaluates policy responses including inclusionary zoning and community land trusts.

Sample Notes