20th Century Inventions

For this assignment, students were to choose a few inventions that were created in the 20th century. I picked the vacuum cleaner, the modern escalator, and the air-conditioner. These inventions are usually taken for granted because we do not realize the comfort that we get from them and how easier they make life. The assignment was to include a brief intro, information about the products, and a final conclusion. We recorded all of this information in our engineering notebook.