Ancient Observatories: Timeless Knowledge - Part 3

NASA Connect video containing four segments as described below. NASA Connect segment explaining the foundations of astronomy and the how the Earth moves relative to the sun. This segment explains how the Earth's tilt creates the 4 seasons. NASA Connect segment explaining how the height of the sun relates to the growing seasons and the length of daylight. This segment describes how Ancient Egyptian and Greek cultures used astronomy in their lives. The segment also contains an activity for exploring how a gnomon works. In the activity students must track the shadows made by a gnomon in 30 minute intervals. The activity will teach students how the length of the shadows and the angles created by the gnomon are related to the position of the sun. NASA Connect segment that shows two examples of how the Navajo used used structures to track progress of the sun in the sky. NASA Connect segment describing the Ancient Mayan civilization and their accomplishments. This segment compares the Mayan counting system to the Roman counting system and has a brief exercise for students to add the numbers 21 and 33 using both systems.

Source:
http://www.open-video.org/details.php?videoid=6505

Creative Commons license:
Attribution 2.5
http://creativecommons.org/licenses/by/2.5/

Category:

Howto & Style

Tags:

• nasa
• connect
• archaeoastronomy
• geometry
• angles
• obtuse
• acute
• right
• sun
• earth
• four
• seasons
• summers
• fall
• winter

[doodkin]

How People will see us at year 3000?

the Disnay movie WALL-E has the answer. - Piles of Trash,

Pleasuremaniacs and Irresponsible Lifetraders in the name of the "Corporation" for a little percent of money from the Corporate deal.

In this age they will say they invented the Rules and the Corporation.

the rules separated the corporation from responsibility and the corporation separated people from their wealth and the Nature from its wealth by law - vicious cycle of ownership of the one-owner

[n01gonzalez]

What happened to the sound??

[ptaba123]

omg i love this!! THANK YOU!

[prokkets]

Wow this is lib terrorist propoganda.We need 2 fight the iranins in iran so we dont have 2 fight thm hre.U libs need 2 b detaind untl ucan prove u r not a teorist.If any iraqi tries to take my FREEDOM Iwill blow up his cave cmd cntr.IranNchina have been stckpling WMDs2 use aginst us an our Israeli friends in th form of a mushroom cloud in th global wr n terror.Whn th final nuclear bttle comes to our home streets we need world govt. an hive mind and every1 get microchip so prs bush cn kep us safe