Vision Learning
Visionlearning: Atmosphere and Oceans: Composition of Earth's Atmosphere
An explanation of the different parts of the atmosphere and how pressure and temperature changes at different altitudes.
Hunkins Experiments
Hunkin's Experiments: How to Make Oxygen From a Battery
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This one...