https://padlet.com/avery_volkers_23/9dypc837kae2 Made with an aura of mystery en-us 2018-04-13 17:50:29 UTC 2018-04-18 18:57:07 UTC hello@padlet.com avery_volkers_23 https://padlet.com/avery_volkers_23/9dypc837kae2/wish/251671368 2018-04-13 17:52:24 UTC https://padlet.com/avery_volkers_23/9dypc837kae2/wish/251671368 avery_volkers_23 https://padlet.com/avery_volkers_23/9dypc837kae2/wish/251675576 Rulers were first used by the Indus Valley Civilization prior to 1500 BCE. Made of ivory, the rulers found during excavation, reveal the amazing accuracy of decimal subdivisions on it.]]> 2018-04-13 18:00:24 UTC https://padlet.com/avery_volkers_23/9dypc837kae2/wish/251675576 avery_volkers_23 https://padlet.com/avery_volkers_23/9dypc837kae2/wish/251675758 tempature]]> 2018-04-13 18:00:43 UTC https://padlet.com/avery_volkers_23/9dypc837kae2/wish/251675758 avery_volkers_23 https://padlet.com/avery_volkers_23/9dypc837kae2/wish/253163145 Many ancient cultures and civilizations independently discovered and prepared ink for writing purposes. The source of carbon pigment used in Indian Ink (called musi) used in ancient India, was India. Since 4th century BC, the practice of writing with ink with a sharp pointed needle was common in South India.]]> 2018-04-18 18:48:35 UTC https://padlet.com/avery_volkers_23/9dypc837kae2/wish/253163145 avery_volkers_23 https://padlet.com/avery_volkers_23/9dypc837kae2/wish/253166396 rainfall]]> 2018-04-18 18:54:49 UTC https://padlet.com/avery_volkers_23/9dypc837kae2/wish/253166396