1. CLOCKS The history and how they have changed

2. Sundial The first clock Created by the Egyptians The Sun’s shadow told the time

3. Sundial

4. A sundial in Denver, CO! Cranmer Park

5. Water Clocks Water Clocks are COOL!

6. Water Clock Created by the Chinese Invented after the sundial Tells time using water Water Clock at the Indianapolis Children’s Museum

7. Let’s see the Water Clock work!Indianapolis Children’s Museum Click here

8. The Mechanical Clock • Who invented it and when? • How does it work? • Different kinds of mechanical clocks

9. Who invented the mechanical clock? Hmm ... Johnny, do you know who invented the mechanical clock? No one knows who invented the first mechanical clock The first known mechanical clock was built many, many years go in the late 1200s.

10. How does a mechanical clock work? It tells time by turning gears

11. How the mechanical clock works Click here to watch a movie

12. The Mechanical Clock Different kinds of mechanical clocks Alarm clock Wrist watch Pendulum

13. Can you find the mechanical clock in the video? Click here

14. Two ways to tell time • Analog clock • Digital clock

15. Analog Clock • Analog clocks tell time by using 3 hands • Hour hand • Minute hand • Second hand

16. Digital Clock • Digital clocks tell time using numbers

17. What is your favorite clock? What is your favorite clock? You have learned about many types of clocks. Tick-Tock wants to know which clock is your favorite?

18. Sources All images provided by Google Images All videos provided by You Tube www.inventors.about.com www. historyworld.net

19. The End!