The colorful Pennsylvania Big Timeline Big Timeline shows an overview of 48 chronological events, important dates and pictures. This Big Pennsylvania Big Timeline Timeline of awesome achievements and events will stimulate students' imagination to help them visualize important events in history. The Pennsylvania Big Timeline Big Timeline measures 11 inches tall by 8 feet long, stretching across the classroom to create a central visual presentation of state facts. A must-have for every classroom. Kids love to use it.