Geologic Time Scale The following fold-over is depicted using colored paper – this was for demonstration purposes only. Use 7 white blank sheets of paper that are staggered ½ inch (this forms the tabs) then fold over the top to within ½ inch of the first tab. This should give you 14 tabs in total. Staple the top. Now you are ready to begin.

FRONT VIEW Fold the top over toward the back to create 14 tabs Stagger the paper by ½ inch to create.

SIDE VIEW Fold the top over toward the back to create 14 tabs

FINISHED FOLD Staple the top with 2 to 3 staples

FINISHED FOLD with TITLES Geologic Time Scale FINISHED FOLD with TITLES Time (millions of years ago) Era Period Cenozoic Quaternary 1.8-present Color code the Paleozoic, Mesozoic and Cenozoic over the TABS as shown. Tertiary 6.5-1.8 Cretaceous 145-65 Mesozoic Jurassic 208-145 Triassic 245-208 Permian 290-245 Carboniferous 363-290 Paleozoic 410-363 Devonian Silurian 440-410 Ordovician 505-440 Cambrian 544-505 Precambrian Time Vendian 650-544

Under each tab, write a brief history of that Period Under each tab, write a brief history of that Period. Should be around 3+ sentences long.