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    Male junior high teacher leading lesson at projection screen in classroom — Stock Photo
    Male junior high teacher leading lesson at projection screen in classroom
    Male professor using laptop next to projection screen in classroom — Stock Photo
    Male professor using laptop next to projection screen in classroom
    A young Caucasian woman stretches next to a stationary bike. — Stock Photo
    A young Caucasian woman stretches next to a stationary bike.
    Collaboration text on audio visual presentation screen — Stock Photo
    Collaboration text on audio visual presentation screen
    Business people preparing audio visual presentation on Focus — Stock Photo
    Business people preparing audio visual presentation on Focus
    Female teacher in hijab teaching lesson at projection screen in classroom — Stock Photo
    Female teacher in hijab teaching lesson at projection screen in classroom
    Audience watching male speaker on stage — Stock Photo
    Audience watching male speaker on stage
    Female speaker in hijab on stage talking to conference audience — Stock Photo
    Female speaker in hijab on stage talking to conference audience
    Male community college instructor leading lesson at projection screen in classroom — Stock Photo
    Male community college instructor leading lesson at projection screen in classroom
    Business people preparing audio visual presentation at modern office — Stock Photo
    Business people preparing audio visual presentation at modern office
    Junior high students using computers, listening to teacher in classroom — Stock Photo
    Junior high students using computers, listening to teacher in classroom
    Business people with takeout lunch video conferencing in meeting — Stock Photo
    Business people with takeout lunch video conferencing in meeting
    Female teacher in hijab leading lesson at projection screen in classroom — Stock Photo
    Female teacher in hijab leading lesson at projection screen in classroom
    Audience watching female speaker in wheelchair on stage — Stock Photo
    Audience watching female speaker in wheelchair on stage
    Business people preparing audio visual presentation on Focus — Stock Photo
    Business people preparing audio visual presentation on Focus
    Audience watching speakers talking on stage — Stock Photo
    Audience watching speakers talking on stage
    Audience with camera phones photographing speaker on stage — Stock Photo
    Audience with camera phones photographing speaker on stage
    Male high school teacher leading lesson at projection screen in classroom — Stock Photo
    Male high school teacher leading lesson at projection screen in classroom
    Teacher leading lesson at projection screen in classroom — Stock Photo
    Teacher leading lesson at projection screen in classroom
    Computer programmers examining data on futuristic hologram — Stock Photo
    Computer programmers examining data on futuristic hologram
    Male community college instructor teaching lesson at laptop and projection screen in classroom — Stock Photo
    Male community college instructor teaching lesson at laptop and projection screen in classroom
    Friends watching soccer match on projection screen in backyard — Stock Photo
    Friends watching soccer match on projection screen in backyard
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Male community college instructor at projection screen in classroom — Stock Photo
    Male community college instructor at projection screen in classroom
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Businessman using futuristic hologram computer — Stock Photo
    Businessman using futuristic hologram computer
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Smiling, enthusiastic businesswoman using futuristic hologram computer — Stock Photo
    Smiling, enthusiastic businesswoman using futuristic hologram computer
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Male speaker on stage talking to audience — Stock Photo
    Male speaker on stage talking to audience
    Conference audience with hands raised for speaker on stage — Stock Photo
    Conference audience with hands raised for speaker on stage
    Male instructor leading lesson at projection screen in classroom — Stock Photo
    Male instructor leading lesson at projection screen in classroom
    Community college students watching instructor leading lesson at projection screen in classroom — Stock Photo
    Community college students watching instructor leading lesson at projection screen in classroom
    Friends relaxing, watching movie on projection screen in backyard — Stock Photo
    Friends relaxing, watching movie on projection screen in backyard
    Man giving presentation on projection screen — Stock Photo
    Man giving presentation on projection screen
    Portrait smiling, confident female instructor with paperwork leading lesson at projection screen in classroom — Stock Photo
    Portrait smiling, confident female instructor with paperwork leading lesson at projection screen in classroom
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Screen at a drive-in movie theater — Stock Photo
    Screen at a drive-in movie theater
    Junior high students at computers watching teacher at projection screen in classroom — Stock Photo
    Junior high students at computers watching teacher at projection screen in classroom
    December 6, 2013. Milan. Empty conference room in an office — Stock Photo
    December 6, 2013. Milan. Empty conference room in an office
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Empty classroom with projection screen — Stock Photo
    Empty classroom with projection screen
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Speaker on stage answering audience questions — Stock Photo
    Speaker on stage answering audience questions
    Business people discussing Collaboration in audio visual presentation — Stock Photo
    Business people discussing Collaboration in audio visual presentation
    Junior high students at computers watching teacher at projection screen in classroom — Stock Photo
    Junior high students at computers watching teacher at projection screen in classroom
    Smiling male teacher leading lesson in classroom — Stock Photo
    Smiling male teacher leading lesson in classroom
    Business people video conferencing in urban conference room meeting — Stock Photo
    Business people video conferencing in urban conference room meeting
    Friends cheering, watching basketball on projection screen in backyard — Stock Photo
    Friends cheering, watching basketball on projection screen in backyard
    Portrait male science teacher teaching DNA lesson at projection screen — Stock Photo
    Portrait male science teacher teaching DNA lesson at projection screen
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Junior high students using computers and watching teacher at projection screen in classroom — Stock Photo
    Junior high students using computers and watching teacher at projection screen in classroom
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Business people video conferencing in conference room meeting — Stock Photo
    Business people video conferencing in conference room meeting
    Business people talking video conference in conference room meeting — Stock Photo
    Business people talking video conference in conference room meeting
    Woman giving presentation on projection screen — Stock Photo
    Woman giving presentation on projection screen