13,488 Blackboard Visual Aid Stock Videos, 4K Footage and Video Clips

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Browse 13,488 blackboard visual aid videos and clips available to use in your projects, or start a new search to explore more footage and b-roll video clips.

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close-up of the hand of a middle-aged man plotting a graph to show the relative speed at which the planets in our galaxy travel around the sun relative to the distance of their orbits from the sun (m equals mercury, v equals venus etc.) with chalk. - blackboard visual aid stock videos & royalty-free footage
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Close-up of the hand of a middle-aged man plotting a graph to show the relative speed at which the planets in our galaxy travel around the sun relative to the distance of their orbits from the sun (M equals Mercury, V equals Venus etc.) with chalk.
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first grader stands in front of a giant hanging poster of alphabet consisting of letters, and sounds them out in front of the class while he points to them with a big ruler. boys and girls are sitting at desks and they repeat after him. - blackboard visual aid stock videos & royalty-free footage
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First grader stands in front of a giant hanging poster of alphabet consisting of letters, and sounds them out in front of the class while he points to them with a big ruler. Boys and girls are sitting at desks and they repeat after him.
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a man points to a position on a blackboard with his little finger before drawing a sequence of small x-shapes in chalk in an undulating line to indicate how vera rubin showed that stars travel at roughly the same speed irregardless of orbit distances. - blackboard visual aid stock videos & royalty-free footage
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A man points to a position on a blackboard with his little finger before drawing a sequence of small x-shapes in chalk in an undulating line to indicate how Vera Rubin showed that stars travel at roughly the same speed irregardless of orbit distances.
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