teaching

• The Atmosphere

Structure and properties of the atmosphere
a lecture with explanation, illustrations, questions and examples, from: Lyndon State College, Meteorology

• Greenhouse effect

Global Warming Experiment
Teaching concept with experimental part, illustrations, explanations and links to further material, from: Michigan Reach Out Centre

• Oxidation & Oxygen

Oxygen content and oxidation reactions
background information and instructions for experiments in classes, from: Christian Study Centre

Oxygen in the air
Experiment: how much oxygen is in the air, text only, from Waynesburg College

• Ozone

Ozone depletion and ozone smog
concept for analysis of differences in tropospheric and stratospheric ozone, from Cégep de Sainte-Foi