Style Guide for Science Time Line: Interactive – Web Page The aim here is to reduce clutter and show the sequence and relationships of events. Scales are approximate, and lines are sequenced to capture events at different time scales. Typically scientific advances are clustered. Method: 1.Open power point 2.Add Title 3.Add 3 -4 Time bars 4.Dates are added – use call out, duplicate and place 5.Label Historical periods 6.Place 1 – 5 Key event picture per bar 7.Hyperlink to other slides, copy picture add detail 8.Include mouse over return button 9.Add link pictures 10.Save a copy then save as Web Page, and post to site Here pictures of Homo Habilis “The Handyman” show that stone tools predate modern man

2 M BC 1 M BC 10 K BC 30 K BC 3 K BC K BC Homo habilis Homo sapien Prehistoric Ancient Industrial

Stone tool The "Stone" was the first tool used by man more than 4,000 plus years ago.

Hand axe The first tool made by man was the attachment of a stick to the stone, which created more leverage.

Black smith The "BLACKSMITH" was the worlds toolmaker for approximately 2,200 years.

Monkey Wrench The first manufactured and patented wrench in the U.S.A. was the "MONKEY WRENCH," which was the dominant tool in the market place from 1835 thru the 1870's

Socket / Rachet A major advancement for the tool industry was the development of the Ratchet/Socket combination, which was initiated by patents in the 1920's

COMBINATION WRENCH A lasting change in hand wrenches occurred in 1933 with the perfection of what is now known as the "COMBINATION WRENCH," (Closed on one end and open on the other).