No problem as long as she is not attracted by him

When female watches Islamic lecture on video of a male sheikh, are they allowed to keep their eyes/gaze constantly on the face of the male sheikh/usthad?

Women clothing | February 11, 2014 2:03 pm
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I know that a woman can’t work with men in her job but is she allowed to teach boys? If she is allowed, then up to what age can she teach (the teaching could also be one to one so it is very likely she will be alone with a boy)?
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I would like to know is adhan and iqama is also apply to female?