Curated OER
Pulling Together With Natives -- The Bradley Sisters' Story
Learners identify the four ways to stop the spread of weeds in California. In groups, they practice the five methods of removing and controling the spread of the weeds. To end the activity, they summarize the Bradley sisters way of...
University of Maryland
Optics Highlights: Optics, Electromagnetic Waves, Quanta
Part of an anecdotal history on optics and the study of light. Extremely thorough treatment of the scientific evidence which led scientists to believe in the particle nature of light. Includes a short biographical sketch and discusses...