TeachEngineering
Teach Engineering: Let's Bag It
Students observe and discuss a vacuum cleaner model of a baghouse to better understand how this pollutant recovery method functions in cleaning industrial air pollution.
A&E Television
History.com: 6 Inventions That Transformed Housework
Electric appliances large and small promised reduced drudgery. Most people take washers and refrigerators for granted today, a century ago, these machines revolutionized people's daily lives. The introduction of running water and...