TED-Ed
Bringing a Pop-up Book to Life
Breath life into the pages of a text with this instructional video on creating pop-up books. From choosing a topic, through the planning and creation phases, this video examines how to develop engaging visual...
CK-12 Foundation
Black Hole
What happens to radio waves, time, and light in and near a black hole? Young scientists explore what is known about observing frequency and time at various distances from a black hole. They control the size of the black hole and the...
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