Activities
Carbon dioxide in the atmosphere (2025)
David Suzuki gives a simple outline of climate change due to carbon dioxide in the atmosphere to introduce this topic. The second activity asks students to explain the data from the Keeling curve. Having...
Activities
Rocky shore - abiotic factors
Rocky shores are one of the most well studied examples of zonation caused by abiotic factors. As the environment changes quickly from being submerged in the sea, with little change in water temperature...
eBook
C4.2 Transfers of energy - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL and HL C4.2.1 - Ecosystems are open systems in which both energy and matter can enter and exitAs a contrast - in closed systems only...
Activities
Light Dependent Reactions (2025)
This activity reviews the light dependent reactions of photosynthesis which occurs on the thylakoids of the chloroplast. A first activity introduces the parts of the membrane and the stages of the reactions,...
Activities
Photosynthesis theory model answers (copy)
Oxygen and Hydrogen .................................................................................................................................................... The oxygen is released from the...
Activities
Microplastic pollution & rewilding (2025)
Students watch an short emotive presentation and video about the tragic death of Laysan albatross chicks on Midway Atoll in the north Pacific. They are given an opportunity to deconstruct this presentation...
eBook
D4.2 Stability & change - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL and HL D4.2.1 - Stability is a property of natural ecosystemsE.g. Forest and desert ecosystems have shown continuity over long periods,...
Activities
Stability ecosystems & mesocosms (2025)
This topic explores the need for stability for continuity of ecosystems. There is a requirement of an input of energy, usually from the sun, but then other climatic features affect stability. It's also...
Activities
Biomagnification IB style qns - model answers ()
These are simply suggested answers for the data based questions on this Biomagnification IB-style questions worksheet below. on the Biomagnification page. …Organic material moves through ecosystems...
Activities
Plastic - IBstyle question model answers. ()
These model answers are for the IBstyle questions on the Plastic debris page. Black-footed and Laysan albatross…………………………(1) The chicks have a higer % of plastic in their provetriculus than the juveniles...