Geologic Time on the Web
Students examine a geologic time line on the Internet. They preview questions they are looking for before visiting the "Understanding Geologic Time" website. They browse through the site to find their answers and complete their worksheet.
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Understanding Food Chains and Food Webs
Jump into an exploration of marine ecosystems with the first lesson in this four-part series. After first learning about crustaceans, mollusks, and other forms of sea life, young marine biologists view a PowerPoint presentation that...
3rd - 8th Science CCSS: Adaptable
New Review A Brief History of Geologic Time
How do scientists know the history of Earth before humans—or any mammals—existed? An epic "Eons" series video explains the larger history of geologic time. It highlights the eons, eras, periods, epochs, and ages scientists use to divide...
12 mins 6th - 12th Science CCSS: Adaptable