Earth's prehistory suggests that humans might not have been the first to inhabit it in this collection of scenes from "Aliens B.C."
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"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.
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Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
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* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
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Turn any public video into a live chat with questions and quizzes