1. Did this telephone come before or after 1930?
2. Did this telephone come before or after 1940?
3. Did this telephone come before or after 1970?
4. This telephone has no dials or buttons. When did people us this phone?
5. This is part of one of the telephones. What year was this phone first used?
Now print out this page. Cut out the telephones and see if you can put them in order again.