Jul 012024
 

Philadelphia Zoological Society became the first United States zoo when it opened in 1874. Over 3,000 people came that first day. Admission was a quarter for adults and a dime for children. Children could visit a website at: Philadelphia Zoo. Idea: Children could list the animals found in zoos. They could also draw up plans for a new zoo.

Nov 242024
 

Barbed Wire Patent

Barbed wire was patented in 1874 by Joseph Glidden of Dekalb, Illinois. Ranchers quickly found his invention to be invaluable, and Glidden became very rich. Barbed wire really changed ranching in the West. Young historians could find out the advantages and disadvantages of barbed wire. Children could view his patent at: Barbed Wire Patent.