National Institute of Open Schooling
Occurrence and Extraction of Metals
Steel is a man-made alloy or a mixture of metals. Lesson 18 in this series of 36 focuses on metals and their extraction from Earth. Individuals read about, discuss, and answer questions after learning how people find most metals, the...
Curated OER
Froth Flotation
Sixth graders experiment with the froth flotation process to extract metallic ore by using basic chemicals and equipment in the science classroom.