Radiometric dating online activity
The activity calls for students to simulate half-life properties of isotopes using bags of beads as "rocks and fossils." Appropriate for grades 5 to 8, the activity assigns parent isotopes to different color beads and asks students to solve problems such as arranging the "fossils" in age from youngest to oldest and finding the two "fossils" which are closest in age.The college also offers a game that simulates radioactive decay using dice.[....] In The Holy Science, Sri Yukteswar concludes that we are currently in the beginning stages of Dwapara Yuga, which began around 1699 A. This now puts us in the year 308 Dwapara according to Sri Yukteswar.Thus, we are moving closer to the grand center, and will pass into Treta Yuga around the year 4099 A.260, by Graham Hancock]"Sri Yukteswar’s introduction to The Holy Science includes his explanation of the Yuga Cycle – revolutionary because of his premise that the earth is now in the age of Dwapara Yuga, not the Kali Yuga that most Indian pundits believe to be the current age. His theory is based on the idea that the sun “takes some star for its dual and revolves round it in about 24,000 years of our earth – a celestial phenomenon which causes the backward movement of the equinoctial points around the zodiac.” The common explanation for this celestial phenomenon is precession, the ‘wobbling’ rotating movement of the earth axis.Research into Sri Yukteswar’s explanation is being conducted by the Binary Research Institute.[....]" [Based on: Article (Scientists unearth evidence that Ice Age giants originated in Tibet) cn 2011-09-04 - Editor: Wang Guanqun] NASA's Curiosity rover has  uncovered signs of an ancient freshwater lake on Mars, which scientists say could have been a perfect spot for tiny primitive organisms to flourish if they ever existed on the red planet. P.] The watering hole near the Martian equator existed about 3.5 billion years ago around the time when life evolved on Earth. [NP] The skeleton, described in the British scientific journal Nature and National Geographic magazine, represents the first juvenile remains of these ancient humanlike creatures, making the fossil the oldest child by far ever found. From the waste down, the skeleton looks like a human's. Her brain was small, her nose flat like a chimpanzee's and her face long and projecting.Scientists say the Martian lake was neither salty nor acidic, and contained life-friendly nutrients. Her finger bones were curved and almost as long as a chimp's.
Montana's Office of Public Education offers a lesson plan which teaches students about radiometric dating using information provided online about American Indian bison bones and prehistoric kill sites.
His discovery led to an intense focus on Africa as the probable site of human origins and early development, as Charles Darwin had earlier predicted. - "[....] And indeed the earliest-known stone tools, found in Gona, Ethiopia, suggest that 2.5 million years ago meat was a central part of hominines' diet.
The sharpened stones were used to cut flesh and pound marrow-rich bones from carcasses either scavanged or hunted and then defended against other carnivores.
Use colored beads to simulate rocks and fossils in a radiometric dating game.
Carleton College's Education Department's website has instructions for a hands-on radiometric dating activity.
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D. [....]" - Woolly rhino / Tibet - "[....] The recently uncovered Tibetan woolly rhino, named Coelodonta thibetana, lived in the middle Pliocene around 3.7 million years ago, before the Ice Age, or Pleistocene, began about 2.8 million years ago. D., 05/21/15] - "A 3.3-million-year-old skeleton of a young child curled into a ball no bigger than a cantaloupe - described as 'a bright beam of light' on human evolution - was unveiled Wednesday [09/20/06 - even though it was discovered in 2000, six years ago! [NP = new paragraph] The bones may be the best fossil yet found of the primitive human ancestor Australopithecus afarensis.