Curated OER
How Do You Light Up Your World?
A fabulous presentation on light is here for you. In it, learners view slides which cover many important concepts of light. They understand exactly what light is, what the main sources of light are, what opaque, transparent, and...
Curated OER
History of English
Providing both a history of English before England (Sino-Tibetan, Finno-Ugric, Hamido-Semitic, Indo-European) and a history of English in England, this presentation includes charts and many examples of the changes in the English language...
Curated OER
History of English
Did you know that in Japan you can drink "Poccari Sweat"? Ever heard of "Intervocalic fricatives become contrastive?" Sure. All this and more in a presentation that traces the history of English before England, in England including Old...
Science Geek
Earth's Atmosphere
Ozone gas absorbs the harmful UV-B rays and helps protect humans. An informative presentation begins with the layers of the earth's atmosphere, the pressure and temperature in each of the layers, the ozone layer, the ozone cycle,...