Explore Alliance Presents: How Do You KNOW? – Episode #41: ''Measuring Time"

Humans have been obsessed with the measurement of time perhaps as far back as 100,000 years ago. Dr. Barth guides us through evidence of measuring time that predates clay tablets up through the present day. 

https://explorescientificusa.com/pages/explore-alliance-presents-how-do-you-know-with-dr-daniel-barth

The activities and materials provided free for the How Do You Know? program are based upon Dr. Barth’s award-winning book: Astronomy For Educators. This book is used as a resource in more than 5,700 schools across the United States and in more than 50 countries world-wide. Published as an Open Educational Resource Text, it is made available from the University of Arkansas Library Press.