4K African american child in class using laptop after peer raising hand raising hand and replying african american child in class 股票录像 African american child in class using laptop after peer raising hand raising hand and replying african american child in class 股票录像
4K African american boy at desk raising hand responding to teacher using silver laptop african american boy at desk raising hand 股票录像 African american boy at desk raising hand responding to teacher using silver laptop african american boy at desk raising hand 股票录像
4K With teacher asking question african american child raising hand at desk wearing headset answering classroom student engagement 股票视频 With teacher asking question african american child raising hand at desk wearing headset answering classroom student engagement 股票视频
4K Female teacher walking in as male child raising hand leaning in classroom explaining laptop female teacher walking in as male 股票视频 Female teacher walking in as male child raising hand leaning in classroom explaining laptop female teacher walking in as male 股票视频
4K Diverse teens in class typing on silver laptops boy in yellow raising hand after looking up students classroom technology learning 影视素材 Diverse teens in class typing on silver laptops boy in yellow raising hand after looking up students classroom technology learning 影视素材
4K Diverse child peers in class high fiving boy raising hand walking back girl typing laptop diverse child peers in class high fiving 影视素材 Diverse child peers in class high fiving boy raising hand walking back girl typing laptop diverse child peers in class high fiving 影视素材
4K African american preteen smiling and raising hand to answer question in class at table with headset student classroom education 股票录像 African american preteen smiling and raising hand to answer question in class at table with headset student classroom education 股票录像
4K School age girl in denim raising hand after shifting answering at school with tablet headphones school age girl in denim raising 股票视频 School age girl in denim raising hand after shifting answering at school with tablet headphones school age girl in denim raising 股票视频
4K African american girls sitting with tablet in class teacher asking right girl raising hand african american girls sitting with 股票视频 African american girls sitting with tablet in class teacher asking right girl raising hand african american girls sitting with 股票视频
4K Female child with curly hair at desk in classroom listening to teacher raising hand smiling student education learning engagement 股票视频 Female child with curly hair at desk in classroom listening to teacher raising hand smiling student education learning engagement 股票视频
4K Boy raising hand after glancing left seeking help as adult leaning in and speaking at laptop classroom student education learning 股票录像 Boy raising hand after glancing left seeking help as adult leaning in and speaking at laptop classroom student education learning 股票录像
4K Indian woman in hijab listening to colleague nodding raising hand asking question at desk indian woman in hijab listening to 股票录像 Indian woman in hijab listening to colleague nodding raising hand asking question at desk indian woman in hijab listening to 股票录像
4K African youth raising hand after teacher prompt smiling at tablet on stand to answer in class student desk classroom engagement 影视素材 African youth raising hand after teacher prompt smiling at tablet on stand to answer in class student desk classroom engagement 影视素材
4K African american woman raising hand with tablet leading kids with backpacks down hall to courtyard supervision students corridor 股票录像 African american woman raising hand with tablet leading kids with backpacks down hall to courtyard supervision students corridor 股票录像
4K Teacher asking teenage female student in hoodie raising hand lowering thinking in class at laptop classroom education learning 股票录像 Teacher asking teenage female student in hoodie raising hand lowering thinking in class at laptop classroom education learning 股票录像
4K Teenage male student in blue jacket raising hand to speak as teacher gestures near whiteboard teenage male student in blue jacket 影视素材 Teenage male student in blue jacket raising hand to speak as teacher gestures near whiteboard teenage male student in blue jacket 影视素材
4K Students on teacher prompt african american child in class raising hand and answering near � classroom participation student 股票视频 Students on teacher prompt african american child in class raising hand and answering near � classroom participation student 股票视频
登录 
