Josephine Cochrane's dishwasher
Personatges:
Tema: Household appliances
Competències
Competència Matemàtica, en ciència, tecnologia i enginyeria
Competència personal, social i aprendre a aprendre
Competència emprenedora
Matèries i cursos per Sistema Educatiu
Espanya > Tecnologia > 4t ESO > Operadors tecnològics
Enunciat
Read the following text about Josephine Cochrane's dishwasher and answer the questions.
Josephine Cochrane's dishwasher was the first industrial dishwasher to sell successfully. The original model was introduced at Chicago's World Exhibition in 1893. It was later on modified and improved, and Cochrane herself patented many of these improvements.
American patent no. 355139 (USPTO).
1.- Look up information online and briefly describe the mechanism used in the first dishwasher invented by Josephine Cochrane and introduced at Chicago's World Exhibition in 1893.
2.- Describe how it is different from current dishwashers.
Observacions i context
We can link Josephine Cochrane's invention to other everyday inventions made by women in the late 19th and 20th centuries: the sewing machine (Helen Blanchard), the hypodermic syringe (Letitia Geer), the coffee machine (Melitta Bentz), the disposable nappy (Marion Donovan), the lifeboat (Maria Beasley), the ink pen (Bette Nesmith Graham) or the windscreen wiper (Mary Anderson).
Descripció
Exercise on researching and summarising information. In this exercise, we will:
Describe objects.
Look up information.
Summarise key ideas.