1. TED Unit 2 Lesson 1

2. BIG IDEA:

3. QUESTIONS TO PONDER…  When did technology begin?  What were the first inventions?  How did technology impact humans?

5. PALEOLITHIC AGE  500000-10000 BC (490,000 years)  Earliest known stone tool manufacture  Artifacts: stone axes, bone needles, hearth sites  Impacts on history: Improved diet, helped enable early humans to increase their numbers.

6. MESOLITHIC AGE  10000-4000 BC (6,000 years)  Rise in dominance of microlithics  Artifacts: leatherwork, basketry, fishing tackle, stone axes and wooden objects, canoes and bows, domesticated animals, stone circles, hinges  Impacts on History: Domestication of plants and animals led to the beginning of settled communities.

7. NEOLITHIC AGE  4000-2300 BC (1,700 years)  Development of agriculture and year-round settlements  Artifacts: pottery, polished stone tools, spinning and weaving tools, wooden plows, sickles  Impact on history: Dependable year round food supply, division of labor and specialization that further drives invention and innovation

8. FUN FACTS!  Mesopotamian engineers: clay tablets to document irrigation systems, “city” plans, etc.  Babylonian engineers: mathematical concepts for land excavation calculations  Egyptian engineers: built pyramids and complex irrigation systems

9. BRONZE AGE  2300-700 BC (1,600 years)  Earliest civilizations and development of metallurgy Copper + Tin = Bronze  Artifacts: bronze jewelry, tools, weapons  Impact on History: Stone tools being replaced by metal ones; helped humans alter environment at a great rate

10. IRON AGE  700 BC – 450 AD (1,150 years)  Iron used as main metal  Artifacts: iron chisels, ornamental jewelry, swords, axes, spearheads  Impact on History: Military starting to find uses for iron weapons; iron-bladed plows enabled humans to increase food production

11. FUN FACTS!  Greek Engineers: created crossbow and catapult to conquer territories  Roman engineers: created aqueduct systems, sanitary systems, and road systems. First steam engine created during Roman Empire

12. MIDDLE AGE  450-1400 AD (950 years)  Right in the middle!  Artifacts: wheeled plow, horseshoes, waterwheels, windmill, cast iron, cannons, compass, ocean-going ships  Impact on History: rise of money and capitalism, beginning of urbanization and industrialization

13. FUN FACTS!  The word engineer began to appear Comes from the Latin word “ingenaire”-to design or devise  Arab: developing paper and chemistry applications  Chinese: developing clocks, gunpowder, and astronomical instruments

14. RENAISSANCE  1400-1750 AD (350 years)  Artifacts: telescope, microscope, thermometer, clocks, barometer  Impact on History: Instrumentation allowed scientists to observe and test natural phenomena

15. ENGINEER SPOTLIGHT: Leonardo daVinci Born in Italy in 1452 Began career as an artist Painting and Sculpting Put to work designing weapons, buildings, and machinery Credited for first Helicopter design

16. ENGINEER SPOTLIGHT: Galileo Born in Italy in 1564 Discovered many physics property Credited for inventing the Telescope

17. INDUSTRIAL AGE  1750-1950 AD (200 years)  First use of complex machinery and factories; moving away from agricultural societies  Artifacts: steam engine, electricity, automobile, airplane, radio, television, telephone, rocket  Impact on History: Rise of urban centers requiring municipal services; expanding population, living standards improved

18. ENGINEER SPOTLIGHT!  James Watts Refines steam engine for practical use  Alessandro Volta Discovers principles for a battery  Henry Ford Creates concept of the Assembly Line

19. INFORMATION AGE  1950- (65+ years)  Gathering, manipulation, classification, storage, and retrieval of information  Artifacts: transistor, IC, computer, satellite, digital photography, artificial heart, nuclear power plants, space shuttle  Impact on History: Scattering of decision making processes and empowering more people