Past and Present

Past and Present

How are simple machines useful?

Review of Simple Machines

• http://www.mikids.com/Smachines.htm

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

Can you guess now?Are there any of the same simple

machine from the last picture?

• Jefferson's Pasta Machine• • Thomas Jefferson noted these plans for a macaroni or

pasta machine while touring northern Italy in 1787. When Jefferson prepared these plans, macaroni was a highly fashionable food in Paris, where he was stationed as minister to France. He later commissioned his secretary William Short to purchase a macaroni machine in Italy, but the machine was not very durable. In later years Jefferson served macaroni or spaghetti made by cutting rolled dough into strips, which were then rolled by hand into noodles.

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

Can you guess what this is?

• Dayton C. Miller, in cycling attire, stands before his bicycle ca. 1883

• How old is this picture?

Do they use the same simple machines?

• What simple machine do you find on a bike today that wouldn’t have been on a bike in 1883?

Simple Machines on today’s bike

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

• Old-time battery radio (1915-1925 photograph by Harry M. Rhoads) History of the American West, 1860-1920

Today’s version

Can you guess who drew this?

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

Now can you guess?

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

• http://memory.loc.gov/cgi-bin/query/r?ammem/berl:@field(NUMBER+@band(berl+130559))

• Early gramophone, hand cranked (1894 photograph) Emile Berliner and the Birth of the Recording Industry

Which would you rather have?How it this different from the earlier

one?

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

• Carpet cleaner run by a gasoline engine (1907 photograph) Prairie Settlement

Simple Machines

• Gear—yellow• Wheel and axle—red• Pulley--green

Do you know what this does?

• What simple machinesdoes this have?

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention? Are there any?

• Child standing on snow gauge of the Weather Bureau (ca. 1909 - ca. 1932 photograph)

• How does this seem the same as the last

picture? Does anythingin the picture give youa clue to what it might

be?

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

• The Airphibian (1947 photograph)

• What do you think an Airphibian would be?

• What do you think this machine did? Why do you think that?

• When do you think this machine was made? Why do you think that?

• Would a machine like this exist today? What do you think it might look like?

• What types of simple machine were used to make this invention?

• The Holland Submarine (1936 photograph)

• This would be

a submarine today.

• How and where are simple machines used in your every day life? That will be tomorrow’s topic so look around tonight and see what you can find.